https://www.reuters.com/article/us-boeing-airplane-southwest...
https://www.bizjournals.com/dallas/news/2019/07/29/southwest...
That's especially incredible considering Southwest pilots' union says in a lawsuit that the 737 MAX is unsafe.
https://www.seattletimes.com/business/boeing-aerospace/in-sc...
Well, in this case I'd argue that it was totally Boeing's responsibility to communicate to such customers that they couldn't do it.
Instead they nodded their heads, demanded the impossible from their engineers, demoted or fired people that questioned it and in the end offered a hacked solution, which killed over 300 people.
I don't think that your argument excuses their culpability in any way, shape or form.
If I offer you $1 million to shoot someone, and you go do that, two crimes have been committed. Pointing out that I'm also culpable in no way excuses your culpability. I would be the real source of the crime, as the instigator, having set out a strong incentive to commit the crime against your otherwise better judgement.
[0] http://news.aa.com/news/news-details/2011/AMR-Corporation-An...