European NATO countries need to do more and we can do it if we want to. However, we (Europeans) tend to protect "our" defense industry more than what is efficient. If we could agree more on making one artillery system, one IFV, one APC, one aircraft etc etc.
It would also be better if we had a European command structure in NATO, if the US with the new administration became more passive, I don't think the US decides to leave NATO, but they can be stepping back. Maybe having an European SACEUR instead of an American.