Not likely. NaN (the company that was commercializing Blender had to go bankrupt first. The community stepped up and raised funds to free it from the holding company that controlled the IP after that happened.

That said, there are a number of promising 2D options available. Krita added animation support a couple years back and OpenToonz was released around that same time. And even Blender's Grease Pencil developments are making it a robust 2D animation till in its own right.

I recall 3d blender started as proprietary then made open-source via buyout.

Any chance this foundation could do the same with ToonBoom?

Thank you for listening.