False. The average non-technical person is installing unsigned software from Steam and other cross-platform game stores.

In fact, the vast majority of all PC/Mac users play games downloaded from Steam and similar stores, not from the Microsoft/Apple stores.

> the average person isn't using Linux at all so it's not worth considering in this conversation.

The average gamer isn’t using Mac at all either (4% vs. 1% according to Steam), so I guess it is "not worth considering in this conversation" either.

Which leaves us with Windows. So porting to the browser is irrelevant since all games are played in a single platform, according to your own logic.