Yep, regulators generally want to broaden their reach to cover anything and everything that could be interpreted as being under their regulation.
Narrow readings are not for the regulator. You have to go to court (or have the legitimate ability to threaten going to court) to hope for a narrower reading.
[citation needed] it's often more about what industry and politics vs regulators.
Ex: EPA often has a rather hands off policy and is frequently sued for failing to regulate industry. SEC is often described as asleep at the wheel. FDA carved out lots of things as outside their preview like 'natural' remedies even if it was created in Large part to deal with exactly that type of snake oil.
Narrow readings are not for the regulator. You have to go to court (or have the legitimate ability to threaten going to court) to hope for a narrower reading.