The PR fail with the 737 MAX might also bankrupt the company if no one wants to fly on them. I know what I would do as CEO facing those two dire futures.
I already use sites like seatguru.com to work out the best seats on flights - I guess I'll now be checking to see if it is a boeing plane or not before booking.
Now if the 787 is grounded or loses ETOPS certification, that'll be a much bigger hit for the big US airlines.