I can agree with you that PoS is the most promising fix, but even still I don't think it's an easy fix just because the technology exists. For example electric

I can agree with you that PoS is the most promising fix, but even still I don't think it's an easy fix just because the technology exists. For example electric engines are an easy fix technically, but there are still lots of political and practical barriers that need to be solved before they can achieve widespread adoption. It will take time for the market to build the same level of trust in PoS systems that they have in PoW systems.