At scale that’s relatively expensive though, $2.5x1billion is still 2.5 billion dollars. That money needs to come from somewhere…
And that infrastructure costs the same whether you riddle the platform with advertising and influence, or leave it pristine. In fact, leaving it pristine costs far far less to society, all things considered.
Anyway, 'at scale', $2.5 bn is a drop in the ocean. There are thousands of people who could pay that all on their own. The global economy is 100 trillion dollars (as of 2021). And there's this thing called taxation, which sorts out public goods and services (such as communication) at scale.
There needs to be some sort of universal pay per view model that works across any site.