I've seen accidental non-compliance. I've seen what I would call negligent compliance, where a company attempted to be compliant but didn't meet full, correct compliance (one example I've seen is that a company assigned resources to compliance and forgot to increase resources as workload increased, causing them to be increasingly behind on compliance work), but I've never seen a company that just decided to pretend to be compliant knowing that they were not.
Security, GDPR, backups, build pipelines, disaster recovery, most of it will be faked, half-heartedly done once or ignored entirely.
Then there's the more abstract things like scalability, idempotency when integrating with external APIs, error recovery, accessibility, UX, etc.
Almost always that sort of stuff will have been entirely ignored, or there will be a fig leaf over a real mess of misunderstood standards or manual intervention steps.
Startup developers usually have to be generalists as they often wear many hats, so things that need deeper domain knowledge get done to a bare minimum.