I bought 2 CHIPs, disappointed. Spec sheet is perfect, but it's not raspberry pi. glitches (sudden full system shutdown when servo turns a little bit faster), and lack of quality drivers/software to work reliably.
If you need a raspberry pi, just buy a raspberry pi.
I don't think they really care about earning money from their original games. They give out team fortress 2 for free, and has been actively maintaining it all these 9 years. They sell all value game as a bundle for like $20 last year.
On the other hand. Others like battle.net, origin, uplay are just other game companys trying not to give away 30% cut of their new hot game by selling at valve's platform. They will probably lose more from the 30% cut, than the potential customer they would lose selling only on their platform. I totally understand them, I just couldn't be bother to buy them (except blizzard)
Nevertheless, it's just PC games, not a big market. Nowhere compare to apple's iphone games or facebook's web games.