Earlier quoted context omitted.
You came up with a web service that lets anyone upload something and then download it via /uploads/123? That's basically a hello world project. As you found out, the hard part is everything else, like funding it.
Funding it wasn't a problem. It took a weekend to build and was dirt-cheap to host. If people started using it enough to increase the server costs I would've stuck an ad at the bottom. Honestly half of why I took it down is nobody was really using it. I didn't work terribly hard to market it, as I had no aspirations of getting rich and it would've been tenuous to monetize at all. I just told friends about it, etc. I…
About 15 years ago, my sites were pushing 400-600mb/s non stop. Nowadays, I barely hit 1% of my network cap at each VPS location.