You could probably still do it and do fairly well. Go on BlackHatWorld as a starting point. I did this circa 2011-2013, but really all I did was arbitrage between webhostingtalk and BHW/Wickedfire. I ran a bunch of squidproxy instances and let the server providers convince me that I couldn’t have more than 256 IPs per server, so I way overpaid.
Spoken like a true tech bro.
It’s the same mindset with Bitcoin, Tech Stocks or even Pokemon cards. It became valuble because not many people knew.