I meant that a regular user might buy from the Play Store, either of Apple's App stores, or from the Microsoft store.

Admittedly, I seldom buy software from those stores myself -- or, indeed, at all. The things I'm interested in are often available as open source, or they are like $30 or $40 USD (or sometimes $200) and it is hard for me to justify the price (although, if I were single, I could do it on a whim).