Sega does what Nintendon't
https://sonic.fandom.com/wiki/Christian_Whitehead#:~:text=Ch....
https://sonic.fandom.com/wiki/Christian_Whitehead#:~:text=Ch....
Meanwhile; my friends in the Mario and Metroid hacking scene would constantly be hit with cease and desist orders from Nintendo, and some absolutely insane projects have been basically DOA and had to go underground. It’s quite a bit sad.