America is going to pay for the cronyism that merged every airplane manufacturer into one and eliminated internal competition. If you don't have internal competition, you'll collapse in the face of external competition. There is no way to get away from Boeing without getting away from the American aerospace industry entirely, a problem that didn't exist back when McDonnell Douglas was around.
Why would Airbus be different?
The EUs move for greater local safety review, ironically, might make Airbus less safe, since they might be able to capture the EU regulators.
[edit] to emphasize: it's not market competition or the EU being better than the USA that's different. It's just the quasi-monopoly the FAA has on global aviation safety checks and the effect it has on foreign versus local companies.
In fairness, if there were multiple US aircraft manufacturers, they might battle each other for FAA regulatory capture and prevent either of them from achieving it.
[double edit] For the reverse of this see Dieselgate: discovered by some random American(named of all things John German) and pushed into the limelight by the EPA or whatever. It's not a perfect metaphor since he worked for an NGO, but arguably even civil society faces a sort of funder capture. Would German environmental NGOs have blown the whistle on something like this? Maybe?