Absolutely! The bigger the problem it solves, the bigger are the chances for its success.

What do you mean by successful? A one with a high profitability, or a loss-making company with many customers whose customer base can be sold for a high price?

Yes. But problems can be in different areas that you wouldn't expect. For example, Mr Beast's YouTube channel solves the problem of people being bored and wanting to laugh and be entertained. Behind every successful business there is a problem it solves.