It appears all the software and firmware is super proprietary still, that seems a little bizarre, and especially weird there are no clean room implementations of things.
I'm mostly baffled because the platform looks great, it's almost the ideal thing I'd like to play around with, and there's basically a huge barrier to entry :(
It was dramatically better than other computers at multimedia when it first came out, but that didn't last.
I remember programming planar graphics for the EGA, and it was tricky. HAM mode on the Amiga was kinda cool but I'd hate to have to code for it. If you look at the WDDM/Wayland/Programmable Shader model of programming today it vastly better.
In the 1980s there were many computer vendors who got on the 68k train but they all got off because Motorola gave up on it. Apple, Sun, and some others switched to RISC architectures. Quite a few others went out of business.