I've said it before here, but I'll say it again: from the outside looking in this seems to be an ailment affecting the Amiga community more than retro communities. On other retro machines so much is open sourced or rewritten now, but on the Amiga there seems to be some fantasy that people are going to be making money there. Lots of proprietary closed stuff.

I mean, MiST/MiSTer comes out of the Atari ST community, for example. That's what it was originally designed for, an ST core, and all the vhdl is open source.