Breaking a regulation is not the same as breaking a law. We have two types of law in the US, civil and criminal law. Civil law is enforced through lawsuits by the aggrieved party using the legal concept of tort, criminal law is prosecuted by the state in a process we're all more familiar with due to media attention.

Regulations are enforced by regulatory bodies that operate under a different legal basis than civil / criminal law. Regulatory bodies are not legislative in nature but rather executive. Being sanctioned by a regulatory body is a very different thing than getting prosecuted.

For one, a regulatory body does not enjoy legitimate use of force, and cannot imprison individuals. They can only sanction according to their mandate. If you refuse to pay a sanction, this may escalate to a prosecutable criminal infraction. But simply breaking regs isn't a crime.

For instance, if you're operating an illegal home-based business, you may be subject to sanction by the zoning authority and the entity that you were supposed to register with. Like the local real estate board if you were providing realtor services without a license.

Only in rare situations is it a criminal offense to provide commercial services without the proper licenses, such as providing legal or medical services. It is not, as you say, the norm.

Even in the case of environmental regulations, rarely are they elevated to the status of crimes under criminal law. More usually you'll get contacted by the appropriate environmental protection administration and fined. I recall hearing about one company who would simply call up the authorities whenever they needed to dump into the river and pay the token fine.

There's a lot of room for improvement.