I have a stock trading algo that tracks over 500 stocks profitably. Never been able to market it on the web. Even in today’s market. Website is in my profile, not for sale but can license it.
If you have a profitable strategy that scales up, raise capital to execute on it. Doesn’t seem too hard.
Gumroad was scalable and makes a decent amount of money. It just wasn’t for the way the VCs wanted. So it didn’t work out that way, but the founder was still making mid 6 figures.
Email address in my bio.
Thanks