Pheace: Not too surprising imo, it's hard to pinpoint a market it targets.
As for SteamOS, I don't see a reason why I'd replace Windows for it, it just limits my options. Might've used it on a Steam machine I guess but, no need for that.
The walled garden thing though, I find it too early to be saying 'that never happened'. Microsoft isn't even done getting people to cross over to Windows 10 yet. Once the 'Upgrade for free' period ends, that's when I would expect changes and possible limitations to start trickling into Windows 10 (or horrible advertising or whatever they have planned)
If I had a living room I might have considered a Steam Controller since it does appear to be quite useful, but as it is I'm always behind a PC anyway
The only walled garden on Windows 10 is the MicroSoft Windows Store with UWP.
You can still run gog.com or Steam to purchase the PC versions of video games from those digital distribution retailer stores.
You can also develop PC versions of video games using DirectX 12 to not need to use UWP and sell those video games on gog.com and on Steam.
I'm never going to purchase anything from the MicroSoft Windows Store. If MicroSoft releases PC versions of video games exclusively to sell on their Windows Store I will make a wishlist in the video games wishlist section in hopes that MicroSoft will one day release their video games for sale on gog.com.
For the shortest answer I will just tell you I'm putting my money where my mouth is and that is investing exclusively on gog.com.
I also hope Electronic Arts (EA) releases more of their exclusive video games for sale on gog.com as well.