I feel like we went onto two very different planes here.
Sure, data centers are more efficient than a decentralized system, but the question is, to what point the limitless hogging of power and resources makes sense?
Sure, a lot of computing power goes into, say, console gaming, but that's not what I originally talked about. I talked about data centers training AI models and requiring ever more power and hardware as compared to what we expend on gaming, first of all.
And while in gaming the requirements are more or less shaped by the improvements to the hardware, for AI training this isn't enough, so the growth is horizontal, with more and more computing power and electricity spent.
And besides, we should ideally curb the consumption of both industries anyway.