For a product that can be built in 2 months (per the guidance here), it is going to take much more time to develop the sales and marketing and acquire enough customers to make it profitable.
I think this underscores why this may be a great deal for a (young?) developer with limited business experience. I learned a lot of hard lessons like this once I stepped away from an editor.
As for me personally (which I said off the bat was the kind of answers I was bringing. Personal opinions on why I myself wouldn't do it.) I feel comfortable with my ability to sale to people and gain good traction and growth.
But this is a killer opportunity, especially for someone younger who can live on the 5k and is not worried about family and mortgages yet.
This could be better than an MBA for many people who want to bring a real product to market.
Note: I have no context at all on the OP, so I'm making the jump that they have a strong business background and would not be flailing around once it was time to execute.