Well, games are not that important, really?- Do you think we would have fast GPUs and the ability to mass parallel compute on CUDA cores if it wouldn't be about the gaming industry and more importantly about us gamers, who actually paid for the show?- nothing of this would be there, because the money to achieve that, wouldn't have been there to develop it, neither would there have been a need to do so for a very long time. We would still be on machines of the early 90s - we gamers made that progress possible, because we financed it and created a demand for this stuff. And now all benefit from it. So this has been highly important.
Not really sure what any of that has to do with how efficiently companies roll-out updates.
The point is simply that it isn't as important to implement updates for games as efficiently as for, say, cars or phones - which is why game dev's get away with making a halfassed job of it.