My fear is when publishers (like EA) start switching off servers for online games - all that data, lost!
It's a shame a lot of online games and/or modes tend to live or die by their communities. I never did get an online game of Perfect Dark XBLA going just because no one was playing the thing online by the time I got round to purchasing it. Same goes for Banjo Kazooie: Nuts and Bolts.
For an online gaming-related rant, Ridge Racer Vita certainly takes the biscuit - but I'll save that for a dedicated thread on that game over at the PS subsection forum.