Except that a plane has passengers. But this rocket had none. It did not even have cargo. And it crashed in a pre-evacuated zone. There is no need to have the same level of security for these two situations.
No one cares about the booster that's already failed, they care about making sure others don't.
Broadly speaking, this is really good for SpaceX. It is probably the only launch company that can withstand FAA scrutiny of spacefaring like aviation.
I think you mean ULA. Boeing proper doesn't build or launch rockets anymore, but they do own a part of a launch provider.