People in their thirties and forties make by far the largest cohort of entrepreneurs I know who can support the claim of them making their businesses from scratch, and not being part of state economy machine.
Notably, I knew DJI when they still were a "garage company," along with half of "Shanzhai" crowd.
On other hand, just anybody who somehow got $1m+ out of nowhere in China in nineties would've been a man "from the system." The few ways somebody made such money in China back then were: 1. land auction fraud, 2. privatisation auction fraud, 3. embezzlement from funds of the state or state company, 4. being a relative of somebody who did anything of above.