Never be generous with the product itself. In consulting, the product is your time - you can't give that away. In textiles the product is the physical textiles - you can't give that away. In tech start-ups the product is a growing userbase - you can't give that away.
Crazy how cavalier people talk about the user being the product these days. Who's the customer?
Who ever wants to manipulate the user using their PII and associated metadata - Retail, Marketers, Political and Security Apparatus... the world is your dystopian oyster in that regard.