Valve is just 1 developer, good job you figured it out.

Whats your point? You think appealing to the group that maintains steam will get you more native games?

May as well write letters to mcdonalds to make pepsi bring back crystal pepsi.
Ill ask again,
As it is now what benefit is there for steam to bust their asses and spend the money?
Unless some developer has secretly told them some new big name games will be coming with native clients or valve has secretly decided to work with linux theres no real benefit for them. Porting over old games will make some money but likely not enough to make it worth it like a new game would be.