J.B. + D.W. - Why Didn't They Sign On ?
What were the main reasons that Jeff Bridges and David Warner didn't participate to do voiceovers to Tron 2.0 for the PC ?
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Jeff Bridges went on to become a highly successful actor and didn't feel the need to do a video game. He probably felt it was beneath him. That's assuming he was even asked to be a part of it. Naturally the developers would have been well aware that hiring Bridges would have been incredibly expensive. I wouldn't be a bit surprised if they never bothered to even approach him.
Supposedly David Warner is notorious for refusing to acknowledge that he did Tron. If that's true, no wonder he'd refuse to do its video game sequel. If he was even asked, which I doubt.
Bruce Boxleitner did not go on to become a highly successful actor. I'm sure he did a bunch of stuff after Tron, but I couldn't name a single show. He would have no reason to be particularly picky about which projects to accept.