> An end-user node is like a device, which verifies that bank notes are genuine or that gold coins are pure. If everyone can independently reject bad money and accept good money, the good money will have more demand and therefore be more valuable.
The key word there "independently". Proof of resources is one way to tell if an individual node is actually independent.
Proof of resources gives an individual who has more invested in the network more weight in deciding which "bank nodes are genuine". Those individual's votes in theory deserve more weight because proof of resources assumes those individuals are harder to influence (or bribe) and have a stronger incentive to keep the network functioning because they have more at stake. These systems are trying to ensure that the nodes that have the power to accept or reject "money" only accept "good money" and always reject "bad money", and they're using demonstration of resources as a proxy of trustworthiness and independence.
Whether someone ties a bunch of money into specialized ASIC chip that's really only good for mining bitcoin, or they tie a bunch of money into staking eth is an implementation detail.
The key word there "independently". Proof of resources is one way to tell if an individual node is actually independent.
Proof of resources gives an individual who has more invested in the network more weight in deciding which "bank nodes are genuine". Those individual's votes in theory deserve more weight because proof of resources assumes those individuals are harder to influence (or bribe) and have a stronger incentive to keep the network functioning because they have more at stake. These systems are trying to ensure that the nodes that have the power to accept or reject "money" only accept "good money" and always reject "bad money", and they're using demonstration of resources as a proxy of trustworthiness and independence.
Whether someone ties a bunch of money into specialized ASIC chip that's really only good for mining bitcoin, or they tie a bunch of money into staking eth is an implementation detail.