90s clubs grew out of a similar scene. Many started as informal house parties, then grew into warehouse parties and field raves, and eventually that generated enough money for a permanent base and/or an official festival and/or supporting merch and other outlets. (Music labels, merch sales, boho restaurants and bars...)
There was a real startup-like scene around this in the 90s in Europe. You actually need impressive organisational, networking, and marketing talent to make a warehouse or field rave happen.
The festivals this spawned eventually turned into gigantic multi-stage events with the latest audio, VJ, laser, and other tech.
Unless Covid restrictions become permanent, I'd expect a similar cycle to repeat, although perhaps with different properties. (Empty shopping malls? Maybe even empty office blocks?)