After some looking around, it is suggested (but never started outright) that the concerns were specifically related to the terms that Warner Bros layed out, NOT

After some looking around, it is suggested (but never started outright) that the concerns were specifically related to the terms that Warner Bros layed out, NOT to motion capture in general. In fact, he did motion capture for a video game that came out the next year. The game was developed by a Sony studio based out of California.