The 'old internet' was chuck full of hucksters and scammers and 'futurists' selling snake oil, at least from circa 1993 onward and in full bloom since around the time of the Netscape IPO. It was pretty much exactly like the crypto industry, a core of real technologists doing amazing stuff, and then a whole industry of scammy sales people on top of it.

If you are talking about pre-web, I'd say crypto had that era too, up until around 2012 when bitcoin really took off.