Just as the title says. At the moment I think it'll be embraced by the Indies but Big publishers want wide appeal. And while I can see many hardcore gamers at least looking into Steam OS. I don't see many casual computer gamers looking into anything ran on Linux. And casual gamers make up a much larger slice of the marketing pie than hardcore gamers (look at what the Wiis primary success was based on.). So unless Steam OS and Steam Box gain traction with the general populace then I don't see major publishers giving it any more than a token effort.
I'd like to point out in this case "hardcore gamer" refers to the kind of people who frequent gaming sites and follow the news and whatnot and spend a lot of there free time playing games. Whereas "casual gamers" are the kind of people who only occasionally buy games in franchises that catch there interest and probably get there gaming news from non-gaming related sources and don't spend a large amount of there free time playing games.
I'd like to point out in this case "hardcore gamer" refers to the kind of people who frequent gaming sites and follow the news and whatnot and spend a lot of there free time playing games. Whereas "casual gamers" are the kind of people who only occasionally buy games in franchises that catch there interest and probably get there gaming news from non-gaming related sources and don't spend a large amount of there free time playing games.