If you're trying to build something that has been built 19,000 times before, then yeah, the LLM is going to be amazing at it.

You can tell it, "Build me a Tic Tac Toe app." Because there are so many coding tutorials on the internet on building Tic Tac Toe apps, it'll be able to just one-shot the entire thing. You won't have to even prompt it at all.
The nature of businesses is that the reason that they make money a lot of times is that it's something new. If you're just going to build a Tic Tac Toe app, obviously no one is going to pay for it so they're sort of fundamentally a little bit incompatible.
Which is the reason I say that if you want to build an app that makes 10K a month, then you can't be building apps that LLMs have seen a million times.