The argument has nothing to do with more resources resulting in more power, of course that is the case. The question is how does one acquire those resources and

The argument has nothing to do with more resources resulting in more power, of course that is the case. The question is how does one acquire those resources and maintain them. In proof of work, resources need to be derived and maintained external to the system... who can produce the fastest processors, who can produce the cheapest electricity, who can maintain the more efficient data centers, etc etc... This comes with big risk and require constant upkeep. In proof of stake, the person with the most resources is the person with the most coin and maintaining that not only costs nothing... maintaining it produces more of the very resource.