The idea of paying for usage is actually very appealing.
People do this intuitively with payments (negative). They'll buy a timeshare or a boat (expensive, "lump" cost) when it would be much cheaper on net to stay at resorts or rent a boat and pay by usage.
They'll pay for subscriptions (automatic payments) rather than pay per experience. Many people will pay $20/mo for Netflix, watch it twice a month, but would never rent movies for $3 on Amazon.
They'll pay a big premium for "unlimited" data plans when this actually makes little sense for anyone vs. paying by usage.
There’s no reason a big host can’t be 100% free, entirely relying on user payments for requests to pay for electricity and new servers (where each request is almost free), a few engineers and security guards to physically install, maintain, and monitor the servers (funded by excess or donations).