It is profitable if you're selling a skill that you are good at. Whether it is in bitcointalk or any platform and market place where you can market your service.
Don't be hesitant to sell products or services or skills you are good at.
And do what? Start a whole website that is ran by myself? It sounds harder.
It sounds harder but once you started eventually you will get use to it,You have the skills and that is enough to gain profit,Like what @boyptc says bellow
It is your customers that will run the website once it's made.
You can come up and think of the terms or packages that you can offer. As the developer, it depends on how you'll construct the package of support after sales.
Nothing is impossible specially for the skillful people like you,Just have faith in your self and add more dedication,Sooner you will be one of the Best casino developer not only in this forum but outside as well.
Goodluck OP and Hope you'll start creating one sooner.