@TerminalAutism AMD's Ryzen GPU's are open source drivers, not libre, but still OSS, so libre drivers can be made out of it.
Nvidia outright refuses to open source their drivers even though they keep using open source code all the time, so Nouveau will never get at the level the proprietary Nvidia drivers are, and if it does then the card is already long outdated.

Don't forget that your average Nvidia user tends to be a PC gamer, so to them by the time Nouveau finally supports the graphics card these gamers use, the gamers have long replaced it for a newer one.