you are somewhat close to a potential idea in your post above.
why not have only people who subscribe to BT be people with the rights to post. they pay for the full service so to speak….print, digital and opinion….
all others can only read…..so they do not miss out…if their interest increases, they pay the low fees to subscribe
it’s just a thought anyway, as i for one would be delighted and i am sure, as with many (I am not saying all) on this forum who fly business or first, the company pays, so the company may pay for a subscription as well.