Monero

A benefit of PoS that is relevant to the Monero use case is that it would allow faster finality times. How do you implement sub 5s finality with PoW? You can't... If there is a use case for which fast finality matters is certainly in-person payments. I think this is a drawback for Monero that isn't being discussed enough.

There has been many chains (I'll take eCash - XEC as a model, fork of BCH that implemented the avalanche consensus) that have successfully implemented a hybrid PoW/PoS approach and I think exploring this for Monero would make sense. One of the big concern with PoS is coin distribution especially for crypto that had a pre-mine. That's not a concern that Monero will ever have. PoW is still important to guarantee that the blockchain can be retrieved in a trustless manner. PoS has by design a trusted setup.

Let's take the best of both worlds and make Monero a better medium of exchange that it's already is.

• Monero should be in circulation and used. Not to be staked by investors.
• The Nakamoto Consensus is well understood and simple. Increased complexity would always come with a larger attack surface.

PoS has two main problems: (1) It makes the blockchain less resistant. (2) the Cantillion Effect. With PoS, all it takes to do a 51% attack is to have enough XMR.

If you look at the existing financial system, you can regularly see the big players openly sabotaging themselves to either kill competition or push down prices to cause a panic and then silently buy back more than they had sold while people are still panicking or just because they are subsidized to do so (e.g. DEI). With XMR's antagonism to the existing financial system, PoS would be a death sentence. PoW + PoS changes little since you can just game the algorithm so the PoW doesn't matter.

The Cantillion Effect is essentially, people with wealth get more and more power over time to game the system because they have wealth (PoS) and not because the did anything to deserve that wealth (PoW). It's the whole reason why the financial system is the way it is now and XMR should have no part of it.