It's not a flaw. That's just uncertainty and a gamble. Whether that's sustainable for a given piece of software varies per product. And that's kind of the point

It's not a flaw. That's just uncertainty and a gamble. Whether that's sustainable for a given piece of software varies per product. And that's kind of the point I'm making. The extent at which some users subsidize the app for others is just one of the decisions you need to make when deciding on a pricing structure, not a rebuttal.