So how do you want to grow Linux market share if you say FU to a significant part of the potential market? Steam hardware survey is pretty clear about AMD:Nvidia GPU ratio.
Except gaming is not that "niche":
1.35 billion PCs worldwide - https://www.statista.com/statistics/610271/worldwide-persona...
47M active daily and 90M monthly users for steam https://www.pcgamer.com/steam-now-has-90-million-monthly-use...