I support you guys, but as a commenter pointed out above and the fact that linux is a small community and doing anything for linux is just....charity. Even if you make a profit, for most companies that doesn't do much when you can just concentrate on Windows. For the shareholder who could careless about the common linux user because of how small the market is. Im sorry to say, OP, but you're gonna wait a long time.
The Switch would see a release first as it has a bigger market share cause linux gamers only make up .05% of the gaming market share and switch has sold 37 million units as my google search points out.

https://www.phoronix.com/scan.php?page=news_item&px=Steam-Linux-April-2018

goodluck guys!