Blendle was largely targeted in the Netherlands and Germany so if you’re in the US it isn’t surprising that you didn’t see it. But it had major publishers on board and it failed.
But you’re right, it’s a chicken and egg problem that won’t get resolved. If an org is already making money via subscription they have no incentive to do micropayments.
Patreon is probably the closest successful model of this. A indie newspaper could maybe launch via it. That’s basically newsletters today in a way.