PMF is tricky. Google's first product was a hit, but it wasn't a market fit because nobody was paying for it so there was no market. They were attempting to sel

PMF is tricky. Google's first product was a hit, but it wasn't a market fit because nobody was paying for it so there was no market. They were attempting to sell an enterprise version (the search appliance). They pivoted pretty fast to AdWords. Like, is there PMF if no money is changing hands. I saw Docker be described as having extreme PMF but they went down because they had a product, but giving away cool stuff does not create a market.