I'd propose replacing "indefinitely" with "until the systems it interacts with require changing it". It takes surprisingly short time for a mobile app that is w

I'd propose replacing "indefinitely" with "until the systems it interacts with require changing it". It takes surprisingly short time for a mobile app that is written to current standards to turn into something that doesn't run on latest updated OS version. It's a good point that selling software indefinitely isn't possible. There are only a limited amount of people who want the software and are willing to pay for it.