[Dextro]

For steam at least I think the problem would just go away if Valve would allow trusted third parties to activate a key without ever revealing it to the user. Then publishers could sell on any marketplace and the key would never be visible.

Sure, it's "fixing" the problem by making a massive move to control the market but if the games industry in general really wants it it's the only way I reckon.

[opencl]

Valve already had that feature years ago and got rid of it. I know at least Humble Bundle was using it for a while.