It's happening already. Salesforce is buying up a bunch of different online b2b tools. Google is trying Google+, integrated Google Voice. Skype and MS. Facebook places.
Games are growing on social networks instead of standalone flash game sites. Techcrunch is bought by AOL.
So what? New ones also spring up and sometimes the new ones are big enough to eat the old ones. From what I can see, the market is in a continuous state of expand->consolidate->repeat.
Games are growing on social networks instead of standalone flash game sites. Techcrunch is bought by AOL.