Sincere question, been studying lots of OSS commercial licensing and always wonder what works in which context
Yes, it's a good-faith license. The license doesn't even apply to the OSS version (only prebuilt binaries).
The bet is that super fans will pay for it in the early days and, as it gets adopted by larger companies, they will pay in order to comply with the legalities of commercial use. So far, it's working! The largest company so far is 34 seats, with a couple more in the pipe!
It makes good sense because companies actually have an absurd amount of liability to you if they violate your agreement.
You can be an Oracle and audit your customers and develop that adversarial relationship. The idea is that that sort of thing makes you rot in the long run.