In interviews they've claimed that much of the lag players experience is from poor monitors. I don't know if I buy their claim of how much (I want to say the claim was "most", but I'd check that before I would argue it,) but I can certainly buy that as a contributing factor.

I agree with you though, having to buy games I've already bought once is annoying. But unless storefronts/publishers all agree to hold hands, sing Kumbaya, and honor each other's purchases, I don't see another option.