Ok so I don’t completely agree… The thing is: mobile apps today have this approach where they don’t have “releases”, there’s one entry on the app store, and if you buy that you usually get updates for as long as it exists.
In the past, computer software always had periodic (usually yearly) releases, which meant that if you bought one version, afterwards you’d have maybe updates for bugfixes and such, but no new features. The result was that the development of new features was paid by people replacing the old version with the new one, because they wanted the improved version.
Nowadays you buy the app and you keep getting new features, sometimes for years, and that development is paid solely thanks to new buyers. Which is cool if you are the customer but it’s not great long term for the developer.