The time has finally arrived.
Before our eyes drama unfolds. Mark Zuckerberg's Facebook is about to  face an attempt to its hegemony in social space. Google's new offering  Google+ appears to be tech giant's first real attempt into social space.  Yes there was Buzz and there was Wave, but those were no different than  your average Google experiment. Those projects were no more than little  skirmishes in military terms. This time the effort is being led by  Larry Page himself and for those of us, lucky enough to participate in  the limited trial, it seems very clear that Google means its business  this time. You can read all about features offered by G+ and comparisons  with Facebook on other sites. Here I will indulge in some strategic  speculation about what we are about to witness in following months.
Thus far, Facebook had been sailing uncharted but pretty still and  clear waters. Indeed, it did meet MySpace and Friendster along the way.  But both had too many problems with themselves and their old school  industrial type management, who didn't really understand what was lying  in front of them to react to this new threat. As with any successful  business there was some inspiration, some luck and loads of brilliant  execution. I will not go into depth, but I have to point out two  brilliant features that Facebook had in 2004/2005. First was an  introduction of peoples real identity to the Internet. Yes there have  been people who used their real names or parts of real names for online  identity before Facebook, but the phenomena was rare and mostly limited  to people who rely on their public persona for a living. The second  brilliant insight what that Facebook was offered to college students,  who were both savvy and horny enough to adopt the service early. In  those days Facebook was a very private matter - and getting access to  someones profile would allow you to access their decadence and enable  you to in turn share yours. Exclusivity of Harvard and Ivy league did  play its part - but was more a consequence of where it all started.  Everything else from then on was brilliant execution, culminating in  2010 with adoption peak and IPO preparations.

In the mean time there have been many speculations (hype to be more  exact) on how Facebook is going to be a Google killer. I have always  found these analyses rather distasteful. Because to me it was always  clear why that could not be the case, since Google has so many  competitive advantages. First Google has more of everything, more  talent, more infrastructure of all kinds, more revenue and enough cash  on hand to almost buy the damn thing. Insane valuation notwithstanding.  The second key point in this comparison is the fact that Google has  services that offer actual value, while Facebook is used mostly for  wasting precious time one has in life. Last point I would like to make  is that there are two kinds of Facebook users, first are the ones who  are ignorant of their privacy and implications that their actions may  have in the future. Second group are the people who hate Facebook due to  its absolutely abysmal record regarding respect for peoples lives. It's  CEO is of no help here. If he has Asperger's or is an genuine asshole  plays no part. There is also a third group who are various tech geeks  that have completely forgotten about Microsoft due to their hate of  Facebook.
So what I have lay out in front of you thus far is my view of the  battlefield. And now I shall take a look into the crystal ball. Google's  strategy seems clear: G+ is going to be the new hub for its services.  Even now in its infancy - everything seems to fit together in a nice and  organic fashion. It seems to be governed by the rule of least surprise  for user. There is not much more to say about it, because there has and  will be enough said on this topic. Except that everything is proceeding  nice and Googly. On the Facebooks end however, I suspect many hardships.  First - their feature set is kind of shallow in comparison to repainted  Google's offering. There is nothing there beyond flash games and  vanity. Facebook is already making its first move by releasing Skype  video chat integration. This feature may have been in the works for  awhile, but I believe that its release is being rushed a bit in response  to G+ field test and imminent release. There have also been hints that  Facebook has some awesome services waiting to be released anytime now.  We can safely assume that both competitors are aware of each others  roadmap for the next couple of months at this point. So what can we  expect from Facebook in the future? It is very likely that they will try  to cover their blind spots. That means they need some services that  offer actual value. I believe we can expect Facebook integration with  Office Live (Lite?) and further deepening of alliance with Microsoft.  After that Facebook will have to strike some new alliances since it  cannot afford to go about building missing services all on their own.

Herein lies true problem and a trap for Facebook. Since Google will  be mostly busy vertically integrating their large horizontal portfolio,  built in a relatively homogenous environment. Facebook will try to widen  their vertical walled garden, to do this it will have to deepen its  relationship with Microsoft or search for new partners. Also it will  have to greatly stimulate partners like Zynga to prevent them from  defecting or at least not sitting on two chairs. But a true problem  probably lies on the mobile front, where Google has lately become a true  juggernaut. I expect that Microsoft will expect some kind payback for  its generous help here, while Mark will probably look more into general  direction of iOS and Android. The biggest problem for Facebook in this  scenario will be loss of agility and having to drag Microsoft along will  probably spark some intense corporate politics that might ultimately  endanger Facebook.
For the end I would like to offer some  perspective how this all came to be. In my opinion this all started as  Facebook more and more refused to be a good net citizen, by starting  erecting walls and making various single sided decisions about  protecting its hoarded data. This is completely understandable as they  had to start making money somehow and decided to take Google head-on  instead of searching for a way to coexist with it. From here on this  will be a war of attrition and I believe that most likely scenario is  that geeks and power users will lead flocks of users from Facebook to  G+. After this exodus I foresee two equally likely scenarios. In first  Google and Facebook coexist, since Facebook will start cooperating with  Google. The other scenario means Google's dominance over Facebook. And  in the very least likely scenario Facebook and Microsoft will beat  Google into submission. In either case Facebook has just lost a lot of  value.