We already mentioned Google and Microsoft, but Keith Boesky, former Eidos president, believes that Apple may have interest in the game service company as well.
Link

Competing cloud-gaming service, Guy de Beer, essentially states that OnLive won’t be able to compete with large ISPs like Comcast and Verizon. In order to do so, he thinks that OnLive will probably sell it to ’someone bigger’ for $2B.