Can I make money by cloning a popular SaaS app?

Do you think I'll be able to pull off an alternative to something like Stan Store or Gumroad?

Stan store and gumroad are both well-known platforms that are frequently used and recommended by people.

Do you still think I have a chance?

Honestly, I don't use them or have any problems with them; it's just that I have a domain that's not being used and I want to start a saas business, but I'd like to know what people here think if this is how one should think of starting a saas