A sandwich costs $5 everywhere, and a car costs $30k everywhere, because that's just what those things cost to make.
It's relatively difficult to look at a web service and determine whether its running costs are normal guy hobby money, rich guy hobby money, or no seriously this won't last six months without VC money.
Decentralised and P2P systems run themselves, but it's hard for them to maintain a centre of gravity without offering something specific, and given that the network itself can't produce value out of thin air, it's probably not coincidental that the ones best able to maintain gravity are offering stuff stolen from elsewhere.