- they release a legacy driver and it's updated, maybe it doesn't have new features, but it gets updated. "someone else" doesn't do that.
- they support opensolaris and freebsd since years and years. "someone else" doesn't even know what solaris and freebsd is.
- 98% of desktop users are on x86 or amd64. if you want nvidia to release docs for 2% of desktop users, good luck.
final words: your grandmother has a "normal" computer and wants her gpu to work. she doesn't give a damn of your points because she payed for that damn card.
Are you able to understand this? no, you're not. give money to companies that sell you bread to get eaten in 5 months. I buy things that work today. good luck and stay safe.