I think microtransaction methods still exist using cryptocurrencies. They were going to be difficult without crypto anyway, because of the hurdles that the stubborn national authorities put up in the way of an international payment system.
I definitely would, if payments in 10s of cents was possible.
But we only get full on subscription that are at least few euros per month and those are annoying to manage and it's quite complicated to evaluate the value beforehand (unlike say a traditional magazine that you can buy as a single issue to test before subbing).
And when you find one-time payments, they are usually high price (around 3€ minimum seems to be the usual) and worse than that, you rarely can own the stuff. You purchase "access" with a license and no way to really save the thing as your own, making the whole thing a bit of a joke, and piracy the only truly sane solution.
A seamless ubiquitous interface and accounting system for penny sized transactions hasn't been introduced anywhere I am aware of.
It would need to be incredibly convenient, easy, reliable, secure, private. With flexible permissioning (subscription list, ok to pay list, etc.) so people were not hammered by "Do you want to pay?" popups all the live long day.
