Individual budgets for individual shows sounds like a big TV network convention. Netflix isn't selling ads against each show; their subscription revenue is shared between all their content.

I just read elsewhere that experts estimated that "Fuller House" attracted over 10M viewers. Even if every single one of those viewers cancelled their subscription after binge-watching the show, Netflix might have made nearly $100M in one month from that show. "Fuller House" probably funded several shows that you or I love.