I don't know why but I instantly remembered about that guy who make the nomadlist site that consisted of one index.php with thousands lines of code.

The thing is that it didn't have any "contemporary" tech stack or whatever, and the founder even didn't know about all that stuff like git.

But the site brought him thousands or even millions of dollars :D

Ah, I know why I remembered about that guy: because he hit the market when the COVID began, so it was probably very timely (everyone started working remotely and then when the COVID ended everyone went to nomad lifestyle)