Earlier quoted context omitted.
In spite of what PoS investors commonly claim, stakemining $COIN isn’t “fair” merely because Joe Bob can earn the same X% per annum that $BIG_VC can earn, where $BIG_VC was able to invest at pennies on the dollar in an ICO, pre-ICO or pre-mine. PoW mining is fundamentally more fair than PoS mining because $BIG_VC has to spend money to mine at all. To mine a PoW coin, $BIG_VC needs to pay for electricity, for ASICs an…
In PoW coins you permanently lose the "stake". So that just means that to achieve the same level of security in a PoS coin, you have to stake a lot more (since you are only losing the time value of the stake).
PoS network security reduces down to top-down human intervention: because PoS networks are unmined, they lack all hashing power which could otherwise be used to build a quantitative fork ranking protocol. When forks occur in PoS, the network stewards have to “pick” a winning forked chain, and enforce that decision on the entire network.
Because there’s by definition no hashing power involved in reaching that decision, it’s a bit of a wonder why PoS networks rely on blockchains at all. PoS security doesn’t really depend on anything other than the level of trust you have in the centralized authorities who control the PoS network. In the best of cases, it’s akin to trusting a Debian-like organization to annoint a specific branch of a Git repository as containing the true history of changes during any project-level dispute.