I think the actual facts you gave regarding enforcement support my point, don't they? All we've seen so far is very targeted, specific actions against the most egregious offenders, whether it is outright scams and ponzi schemes or a financial institution handling billions of dollars worth of transactions while trying to avoid reporting anything.
Basically if you're running a ponzi scheme, an investor con, an unlicensed custodial bank, a non-conforming public securities offering, or a money-laundering operation, expect some agency of the Feds to come calling. But, uh.. duh? That has nothing to do with whether you are handling crypto currency or not.
So far we haven't seen action against legitimately innovative, non-scammy operations in this space. Just the offenders that are quite clearly and quite brazenly flipping their middle finger to the regulations.