It doesn't have to be an unsolved problem, you don't have to be the first - you just have to find your niche. It's the old "build a better mousetrap". Can you find a way to win customers that might have some unmet requirement, even if it's just UI or a slightly better customer service line, or some kind of peer effect i.e. all their friends have it?

I've worked with entrepreneurs who tried to develop apps or products that were trying to improve on existing competitors. What we found is that the earlier products didn't define their market well, or that younger customers preferred something a bit more friendly, e.g. Paypal vs. Venmo.

If you'd like more ideas on how to get to your MVP, feel free to message and we an set up a call.