American Airlines 737 Max declared emergency after engine stall, safely lands
aljazeera.com
aljazeera.com
Boeing doesn't make the engines.
What choice do they have? We have a global duopoly for passenger aircraft and these new efficient medium-body jets have backorders going forward for years.
If it was a simple as cancelling and getting different jets delivered in the same time frame, I am sure that some carriers would do so.