I saw this coming when they announced OnLive years ago and this is EXACTLY the reason why, even though i thought the idea of OnLive was awesome, i was NEVER going to purchase anything through them, at least with STEAM i have a copy of the game on my HDD and can run it in offline mode if they ever shut up shop, with OnLive, when they decide the servers are going down, wave bye bye to your games, even though you only bought them recently.
Now, had they done a deal with the publishers, say, that allowed me to put in my CD key from a boxed copy of the game and play it through OnLive, and charged a monthly Netflix like sub for the service, i think they may have had a better chance of surviving, at least doing it that way they would have had a revenue stream to keep the servers and employees paid.