I'm heading off to the Enterprise 2.0 conference in Boston, and wondering which approach to social media strategy will eventually prevail, the vendor-provided "enterprise solution" or the "roll your own" model in which you basically say, "Hey, all I really need is an interface that feels like Facebook or LinkedIn and everyone will get the drift. Why do I need to buy an "enterprise solution" from a big-league vendor and pay big-league prices for a social media platform?"
So the big question gets down to "features and functionality," which sounds pretty 1970s, if you ask me. Clearly you're going to get a better ROI from the do-it-yourself model, but the enterprise model will likely come with more bells and whistles. The enterprise version is likely to address concerns over security, privacy, confidentiality, regulatory compliance and other sticky issues which are extremely important if you or your business partners (or channel partners) operate in any kind of regulated envionments.
Looks like the the jury's still out. I'll keep you posted on what I learn up in Beantown.