Yep. I don’t think the LCM, Cinerama, or his military museum were his favorite causes. I think they were his favorite toys. He apparently had other causes which he cared more about for the future.
And that's the truth of the matter; I see Paul Allen's betrayal not as not focusing on the big things, but as focusing on the big things too much that he didn't see the little things that made life worth living. The LCM is a victim of that for sure.