Custom GPTs are fine but they’re sort of useless. Since anyone wanting to use a custom GPT has to have a ChatGPT Plus account, they themselves can spin up an even more targeted, even better prompt than anything you could come up with and use that instead.

Unless your custom gpt provides some special bells and whistles through functions or APIs, your custom gpt ideas are going to r copied by someone who can spin up those special bells and whistles and API calls and cut you out from the middle.