With regards to distribution, in PoW all you need to get into the economy is mining equipment and an internet connection. In PoS the only way to acquire currency is from a stakeholder. After distribution, the stakeholders can transact with whom they choose and nobody has any other way to join the system. I realize this is a simplistic perspective, but it is a powerful tool to promote exclusionary policies. For instance, it would be easy for a state to exclude foreign PoS currencies and promote their own. This could be a positive thing depending on your political perspective. It could also be used to segregate social groups by denying them participation. PoW however, cannot exclude anyone that has adequate hashing power.
Finally someone who also realizes this. Although your stance in particular is probably a bit too negative. However, if one really thinks about this he/she would realize it.
This might simplify it for those who do not understand:
In a PoW coin such as Bitcoin: In order to acquire coins you can buy equipment and mine it yourself (aside from buying from others).
In a PoS coin such as Peercoin: In order to acquire coins you need to find someone who is willing to sell i.e. who is willing to let you be part of it.
PoW however, cannot exclude anyone that has adequate hashing power.
cannot exclude anyone that has adequate hashing power.
anyone that has adequate hashing power.
hashing power.Right, and hashing power grows on trees. And Bitcoin early adopters are not billionaires.