...AAA industry for developing Windows Only.
There are literally THOUSANDS of games for Linux and Mac on Steam, and for every DirectX/Windows exclusive purchased on launch you could comfortably buy 2-4 of those and get just as much time, enjoyment, story and entertainment if not more.
Reward devs who support the platforms you want to use. Buy their software, and don't buy software from companies who don't want you.
The same goes for hardware. If you reliably buy GPUs that support Linux drivers well, and give feedback wherever possible that it was a contributing factor in your choice, they will do it more.
Vote with your $$