If someone is submitting something that can be knocked off really quickly, maybe the problem is that they're submitting something that there isn't a good market for.
A lot of people complain about how hard it is to make money on the App Store. Typically we hear only about the 30% as if that is the cause of people’s woes.
Clearly the 30% is a factor, but there are other more significant factors that determine success.
The 30% is really not the elephant in the room.
What makes it so hard to make money on the App Store is the speed at which knock offs can appear.
The App Store supports deep work that is hard to copy and work where there is a backend with network effects.
For everything else it’s just a lottery.
30% isn’t the issue.