For a while I seemed to end up on a YouTube algorithm that was full of people doing just that - a good few found success, but there seems to be a good chunk of work to do looking after the machines and stock.
Which then led me to people who do up washing machines/driers that are dumped at the side of the road, and resell them, which led me to a guy that bought a laundrette - I still watch him, he has a car wash too now...