There's a busines model for high-fixed, zero-marginal cost economic public goods. It's taxes.

The alternatives have all been found wanting: "intellectual property" (copyright and patents), patronage, religious commissions, advertising.

Busking, performance, physical media sales, merch, loss-leaders, widget-frosting, service/support, and shingle-posting all bypass the HFZMC problem by monetising some alternative good, product, or service.

Several of those specifically tie network-effect, rent-generating monopolies with FCZMC goods. Taxes socialise this process.

What to tax is the next question. Adam Smith preferred wealth and land (means of production).

https://en.wikisource.org/wiki/The_Wealth_of_Nations/Book_V/...