Paul Allen did not structure the financials for it to succeed, which is unfortunate. I got to go there once and it was amazing.
The museum on the afternoon we visited was nearly empty. As a result, the museum docents were happy to let us monopolize their time. I mentioned offhandedly that I had always wished I could try programming SmallTalk on an Alto, and the docent said with a grin “sure!” He reloaded their Alto with a programming environment and gave me a short tutorial. I quickly crashed the machine, but I had a lot of fun along the way.
I got to try many other machines that night. I often think with sadness about how my students will no longer be able to easily have this experience.
And didn't do any of the obvious things one might have done if they wanted to preserve the museum's existence, like finding a buyer or starting a foundation. She did the easy thing and scrapped it for parts.
(IIRC she was the executor of his will, trustee of his estate, and the CEO of the company he left most everything to, so she had all the agency she needed to do something responsible with the museum)