Conversely, what would be the point of going through the trouble of acquiring a profitable company and trying to impose disruptive changes rather than sitting back and raking in the profits? AFAICT this is what Berkshire Hathaway does, and it seems to work out well for them.
(Though this isn't necessarily intended to deflate any fears about IBM meddling at Red Hat; for a company as important to OSS as they are, any change is worth being wary of.)
