You'd have to have some way to enforce that people actually make the payments. And once you do that, it seems like an intermediary that just aggregates microtransactions and takes care of settlement at the end of the month or whatever would be a lot easier.

I suspect the probabilistic aspect would not actually be popular.

Yes, I think people would hate it for the same reason they love gambling slot machines. People overweight rare and random events. You'd always remember the one time you got dinged $10 for looking at some lame clickbait article.

You wouldn’t need to sell it as random to the end user.

That's a good point.

I've always wondered whether probabilistic micropayments would fly under sharia-compliant finance.