How do web pages accessed from (for example) Safari cost the publisher 30% of a subscription fee, when a subscription might be established off mobile first?

How are web pages analogous to installing mobile software, in this particular example?

> has to pay you 30% for access to mobile device users

is what the parent comment said, which overlooked web and assumed native app installs

In every single aspect of "business on the planet enabling access to mobile device users".

No? Websites are a subset of the software market, not the other way around. Apple can absolutely monopolize software distribution while providing a web browser.