Many countries have easy, accessible systems already. I can transfer single eurocents to everyone I have an IBAN for, and it'll appear on their bank account in seconds. Places like the US seem to prefer some kind of hybrid system where their bank integrates with one or more different companies to deal with doing easy bank transfers. The biggest problem right now is that you'd need to implement paying and receiving money for every single country's payment culture.
There is an EU initiative (Wero) to unify payment methods at least across the EU, but that's far from finished. Because this system directly integrates with banks, EU citizens won't need to download a separate app to store money in (or connect your bank account to); just the standard banking app you probably have on your phone already will do. It would make integrating micropayments for a large part of Europe very easy.
On the other hand, you'd still need to pay per transaction as a business (a flat fee or a percentage or a combination of both, depending on your bank), so you wouldn't get €0.05 news articles. Without a method to aggregate these payments, traditional banking will still be quite dead.
In truth, I don't think people will pay for news even if it's just one click of a button. People don't value news all that much, and the shady propaganda machines make a lot of "news" available for free, a rate no real newspaper can compete with.