And after a while, your hobby if physical will take space for things that are done, and that you don't need anymore. So why not resell them and fund the next steps ?
You raise another good point; is all monetization of a hobby the same? No, of course not. It's such a blanket statement to say "Save the money-making schemes for work".
Plenty of people have collecting hobbies that almost go hand-in-hand with monetization. Stamp or coin collecting comes to the top of my mind. Value is discussed almost constantly in those communities, and people are forever uptrading their collection to become more valuable over time; it's an investment as much as anything else, and while you will seldom make money there's always an element of minimizing loss. Same with cars, video games, cards, records, and comic books. We collect them because we think they hold value, join communities that also think they hold value, and use money as a scale to judge what value it holds.
