“Proof-of-stake has its own set of difficulties. The network, for example, is still subject to dominance by the most significant token holders. This provides more power to early adopters and people with the most money. The nothing at stake dilemma occurs when a validator signs off on both sides of a fork, allowing them to potentially double-spend their coins and collect double the number of transaction fees as a return.” (cointelegraph).
Although PoS has great potential ~ it desperately needs a new core design to prevent it from becoming another scheme that gets the rich (and company) richer…