Lots of games do and will support FSR because current gen consoles are all AMD (and console gamers outnumber PC gamers).
It's my understanding that there are 2-3x more PC gamers than console gamers, but the console gaming market generates more revenue when you include hardware. In fact there are probably more PC gamers today than total consoles ever sold.
Lots of games do and will support FSR because current gen consoles are all AMD (and console gamers outnumber PC gamers).