That's not the way legal cases went. Indeed, they went all over the place.
That's the reason you see "IANAL" disclaimers all over the internet. Legal advice from non-lawyers can be problematic in many ways. Some jurisdictions, although not where I live, you can even go to jail for giving bad legal advice without being a licensed lawyer.
There is no clear legal, definition of "noncommercial," and courts have gone all sorts of different way on what constitutes commercial use.
This is where CC NC licenses imploded. A lot of places (hello, MIT!) intentionally use CC NC licenses to make things appear more open than they are.