In Proof-of-Work, a large fraction of the money you put into the system is destroyed. There are physicially meaningful economies (and dis-economies) of scale involved. You are generally incentivized to sell your cryptocurrency as fast as possible to cover your real-world costs (lowering the price of the cryptocurrency).

In Proof-of-Stake, you are incentivized to keep your money into the system so you can control more and more of it. It's like a ponzi scheme where you are incentivized to re-invest your winnings. This falls apart when everyone starts to cash out.

The use of bitcoin mining as indoor heating is one such example of a dis-economy of scale (but this is an oversimplification because it does not factor depreciation costs). Also, there are systems like RandomX which encourage CPU-based mining, which has economies of scale for home miners or botnets over larger mining operations.