Valve has been reselling games now for a long time and it didn't affect their ability to develop high-quality games. They aren't flawless but their games are popular, well-maintained and fun. Personally I don't see many parallels to Sony. Steam outages are mostly resolved in a matter of minutes...
"The Korean client features fully localised text and character dialogue from a number of Korean voice actors."
I want this for more languages... pleeaase. (And for CS:GO, too.)