The continued investment required for PoW is the difference.
If a PoW coin ever becomes centralized, it can become decentralized by new parties investing in more hashing power.
If a PoS coin ever becomes centralized, then it stays centralized. You can't just "buy" more stake unless the 51% player agrees to sell you some.
It really seems like PoS is the rich get richer without having to expend any effort. They stake their coins (costing nothing) and get rewards. If you have more coins to stake than others on average, you'll win the block rewards more often than others, increasing your ownership share.
In PoW, because computers are constantly getting faster/more efficient, your existing mining hardware depreciates with time and you have to continue to invest to maintain your dominance.
The continued investment required for PoW is the difference.
If a PoW coin ever becomes centralized, it can become decentralized by new parties investing in more hashing power.
If a PoS coin ever becomes centralized, then it stays centralized. You can't just "buy" more stake unless the 51% player agrees to sell you some.
It really seems like PoS is the rich get richer without having to expend any effort. They stake their coins (costing nothing) and get rewards. If you have more coins to stake than others on average, you'll win the block rewards more often than others, increasing your ownership share.
In PoW, because computers are constantly getting faster/more efficient, your existing mining hardware depreciates with time and you have to continue to invest to maintain your dominance.