The problem with this simplistic summary you've provided is that qualifying a new type certificate is extremely costly.
Yes but you're missing that there are two sets of costs: the recertification cost for Boeing, and the retraining costs for their customers, the airlines. Boeing didn't want to pay and it didn't want to tell its customers that there was this additional cost and risk losing some sales.
Yes but you're missing that there are two sets of costs: the recertification cost for Boeing, and the retraining costs for their customers, the airlines. Boeing didn't want to pay and it didn't want to tell its customers that there was this additional cost and risk losing some sales.