Yeah, but you're referring to "super-computing" situations, where the OS of choice is Linux and nVidia would be shooting themselves in the foot if they only developed drivers for Windows.
When it comes to normal consumer hardware, it seems that nVidia drivers for Linux in 2019 are still a hit and miss:
AMD "just works" even without installing the binary blob from the vendor.
as a matter of fact, there is no need to install said binary as its most likely already upstreamed to your distribution of choice.
but nvidia still reigns supreme if we're talking actual performance ... at least after you've installed said binary blob ;)
and i can say from personal experience that the nvidia 10x0 drivers were terrible in the first ~6 month after their release. fan kept jumping between 10-80% for example. Haven't had any issues in at least a year though, but i'd expect the same kind of issues on any new chipset by nvidia, as they havent open sourced their drivers
When it comes to normal consumer hardware, it seems that nVidia drivers for Linux in 2019 are still a hit and miss:
https://www.reddit.com/r/linux_gaming/comments/bhfjnb/nvidia...
https://www.reddit.com/r/linux_gaming/comments/bol5uo/nvidia...
EDIT: Maybe my formulation of "powerful GPUs" led you on to that. Though I did say "no matter desktop or laptop" to clarify that...