timppu: I presume they will go the same way as GreenManGaming and GamersGate, ie. phasing out their own store/file servers, and start selling only Steam keys, like so many other stores. Their main selling point will be that they sell Steam keys cheaper than anyone else, especially for the little older AAA titles like in the current WB bundle.
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But how long will this business model work? The funny thing is, that Valve does not see a single penny for every game sold throug GMG, Humble oder GamersGate, but GMG, Humble and GG are actually saving money with just selling a key and don't care about file storage and bandwith anymore.
I have no problem with Steam/Valve and as a gamer I am fine with their service, which i think is great. But the whole gaming industry is going into dependency from Valve and Steam. What kind of business developer would go into a dependency with the services of the main competitor? Valve can always move the switch and stop offering free keys and demand a handling fee.