Boeing Commercial division is well and truly screwed.
They bet the company previously on other models like the 707 and 747. Those gambles paid off. This one is a nightmare.
Are they too big to fail? Probably. American Prestige and other factors will come into play to 'save' them.
So the issue is that it takes years to develop a brand new design. Probably close to 10years from draft concept to certification.
And it also takes mega bucks - even for a huge copany like Boieng. Why do you think they rather went for another iteration rather than an clean sheet design? Time and money.
The A320neo with its fuel efficiency was going to kill the previous iteration 737-7/8/900 (NG) in any case. So rather than lose market share by developing a new model which would take years and mega bucks, they gambled. Failed.
The single-isle family is the bread-and-butter of Boeing and Airbus. Wide-bodies sell, but not in the numbers these babies do.
I am not a frequent flyer by any means, but even I would not fly on a MAX at ANY point in my life.
Why gamble on something when the trust is gone? They blamed the pilots and kept on blaming them even after the second crash. Zero trust.
When they are 'certified' again - as I don't see the FAA being able to ground them forever, who is going to gamble their lives on them. Sure, the known issues would have been solved. Sure there was much scruitiny. But damn. Software have bugs. Couple that with a plane which really needs the software to be safe.....
So what happens if the computers fail or some obscure set of circumstances happens which highlights a condition no one thought would occur.. but it does?
Nope. There are alternatives.
If you are not risk averse - then good luck. You might be lucky. But you might not be.