At the moment the steam machines are in the beta phase and need proper feed back to further improve, but steam is such a well known company that any gamer knows and love it is hard to imagine it would not be successful. It will just take time for it to get to that point.
Even though electricity beats steam in most debates, a "future" with steam-powered devices is important. Steampunk technology, and fashion, should have its own place, perhaps a state or city run completely by steam. The Steam Machines WILL be successful, because in movies, Steampunk culture is successful, and we all know that movies tell the truth. Obey.