The differences in the world from 1970 to now are myriad - and fascinating. Essentially no comparison. For example, when the US SST was canx, Boeing was not the only game in the USA.
I am happy to accept
Commercial Airplane Division is not the financial base of the Corporation.
and I agree that no company
should be too big to fail - but they are not going to let Boeing go down as they now have most of the eggs in one basket.