We are standing on shoulders of giants that gave their definition of product market fit:
“Our view has always, preferably, been: give us a technical problem and a big market when that technical problem is solved so we can sell lots and lots and lots of stuff. Don Valentine
“product/market fit means being in a good market with a product that can satisfy that market.” Marc Andreessen
"Product/Market fit means getting to the point where the market accepts your product and wants more of it." Fred Wilson
Both Don and Marc make the argument that the market has to be "good" and "big" in order to have product market fit. meaning, it is not enough to create a product that solves a problem. it has to be for the right market. We could not agree more.