MobyGames isn't a sole example of this happening.
Wikia went through similar changes of interface that were the last drop that spilled the cup.
http://awa.shoutwiki.com/wiki/Buy_outs
Here you can read about wikis that were bribed to move to Wikia, also about wikis which moved away from Wikia - no longer wanting to generate income for people who ignore the community.
All of this sounds very discouraging when it comes to community-driven projects. Not only you work endlessly
for free, but someone makes money off your workhours...