Interesting question but it might be said that, whilst deH survived the initial crisis, within six years it was gone (in all but name) and that indicates that it did not survive. Had the Comet have suceeded, we might have expected deH to have taken HS under it's wing, not the other way around. Boeing gained immeasurably by Comet and Vickers were, I suggest, unfairly tainted by association.
However, I'll stick my neck out and say "Boeing is too big to be allowed to fail" Given that Boeing is the majority of the US aircraft industry - they will continue. By hook or by crook!