What better way to come up with a great and marketable idea than to invent it out of necessity . . . as the Moms in this article did.
What gave them the advantage is that they started with a known need (their own) and then found the best way to fill it: their invention.
Stating the obvious, I suppose, but the point is that instead of thinking up a "Great Idea," these Mom-preneurs started with a specific need . . .and then realized that others in the target audience likely had that same need.
According to the article: ". . . the term “mom inventors” yields about 290,000 results on Google"