But this isn't anything new. You never 'owned' software you bought. It's not yours to do with whatever you wish. I know it's splitting hairs a bit, but when people think they actually own something they automatically think certain rights belong to them. Whether you pay for something that's forever offline or you're using an online service, you're only paying for the right to use the software in accordance with the conditions you agreed to when you bought it. Any sort of online service or something you expect to have continual updates, you are putting faith in the seller to provide what you hope in the future, but that doesn't give you any right to demand it.
ISI could have stopped at Build 660 (just an example) and no one would be able to do anything about it. A lot of us would have hung around regardless and just kept playing on Build 660, and there's a fair chance quite a few people will do that with the build after 1084.
There seems to be so much anti-steam sentiment, and I'm sure there are horror stories like there are with anything, but pointing at its terms of use and saying how terrible they are when you've already agreed to something quite similar for rF2, and indeed nearly everything you've bought in the last 10 years at least (online services being what they are), isn't really accomplishing anything.
I didn't like the look of steam when it first started up, mainly because I read about it being a resource hog and it seemed risky to 'own' a game that needed an online service to keep using it. A friend of mine didn't get rF1 until it came out on DVD for that second reason also (what actually happened? Trymedia wound up [or whatever], so ISI released a new version they took control over). Well Steam's still going, a couple of members of the league I'm in have switched in the last 2 days and steam itself is light, rF2 is just about as flexible as it was non-steam, so I can't see an issue with it and will switch when I get closer to my renewal date.