Even proprietary drivers can use Mesa. Most of Mesa is MIT-licensed.
It's just that Nvidia doesn't care much about Linux, and -as always- Nvidia ignores what everyone else is doing and does their own thing. Sometimes doing their own thing works out really well in the short run, but -long term- they always fall behind.
It's just that Nvidia doesn't care much about Linux, and -as always- Nvidia ignores what everyone else is doing and does their own thing. Sometimes doing their own thing works out really well in the short run, but -long term- they always fall behind.