I see how sites like g2a look a little shady. But others like greenmangaming or gamersgate don't look any different than humblebundle as Steam resellers.

If the concerns comes from the developers getting their share of the sale, then they already got it when the game was bought by the sites in the first place.

When are you throwing chairs at an open source game anyway. There are a few that get updates all the time.

Godspeed and see you.