Innocent BystanderYou are right. That was my experience as well. Here I would like to know specifically how a gamer feels in the Linux world, especially those who moved from Windows.
Well, I feel like I buy a hell of a lot of indie games (really REALLY good ones, actually), and spend way way way too much money on crowd-funding!
In seriousness, it's kind of a hard road at first. Once your back-catalog of games to play is stacked dozens deep, then it doesn't feel like too big a deal. I bought nearly all the Humble Bundles, most of the best Desura games, and now on Steam, I've bought The Cave
(which I'm really liking) and The Book Unwritten Tales
There's no way
I'll be able to finish all of those before my Kickstarter games begin to hit... also, I'm active in the Adventure Game Studio community, helping get the Linux port pretty solid. I'm confident that soon, Wadjet Eye Games, who use AGS almost exclusively, will have their catalog of retro-styled 2D adventure games available (and adventure games are my favorite kind), and so I'll buy all of those.
Not to mention, the AGS community has created loads
of hilarious and brilliant free adventure games (hundreds actually) which mostly work.
To make a very long point short; unless one is a console-addict, or favors AAA mainstream titles, one will never run out of great Linux games to play. Even then, a few quite old AAA mainstream titles are also available. At the end of the day... nobody has to pay for Nethack, or Dwarf Fortress either (both are crazy brilliant) but you're also not stuck with only them