David Stockman's website Conta Corner has gone gated.
It's a hefty price, $400 per year or a monthly subscription of $39 ($468 annually).
As a result of ad blockers, it is very difficult to generate significant revenue on a non-gated basis.
Despite what anti-IPers claim, there is no such thing as free intellectual effort. You either deal with ads or you will end up with access on a very expensive basis.