[MehdiEG]

This is the sort of "startup" that I've seen commonly done by self-proclaimed "serial entrepreneurs".

Hire a developer for next-to-nothing / hour in the Philipines, India or China. Get them to build a quick-and-dirty scraping tool that's focused on a specific industry. Then try to flog it to slightly shady businesses. Try to stay under the radar for as long as you can and make as much money as you can while you're there. Sooner or later, you'll get busted and shut down - no big loss to you.

The people I've seen do that typically have a dozen or so of such "startup" going at any one time and they just keep shutting one down to start another.

This is not the sort of startup that will get you the fame and respect of the tech startup world. But it can certainly make you money if you have the "right" mindset. Just don't bet the farm on it.