[einpoklum]

> Can I freely use your toilet then?

You can freely use the design of my toilet, certainly.

> You pay for the plumber, why don't you pay for entertainment?

I pay for physical objects that are made for me, like books; and I pay when people come play their music (even if payment is not mandatory).

But TBH - I don't think that's the appropriate moral basis for things. For example, we don't pay for the huge amount of work our parents do for us; nor for the not-for-profit activities we often rely on etc. I would much rather support a non-exchange-based social arrangement.