I see your point, but you have a lot of real-life experience? In Europe bankruptcy is a much bigger stigma than it is in the US; it haunts you forever and it's noted as one of the biggest reasons EU startups are less gutsy than US ones; if you go broke, you are screwed for life here. But it goes very very fast; I know a few product companies at least that went from going well to complete misery in a few months. Those are trains going to the wall with
necessary burn rates of $1M+ / month; what I mean by that is, the only way to have a
chance at survival is actually servicing the few clients (we're talking
big contracts) you have left and during that trying to reinvent your business. This is a win or lose fight; sometimes you win, but if you lose, you have a good chance to be millions in debt in no time. We are still talking startups here, so no $15M war chest in the bank. Probably some of that money was investor or bank money as well. Other reasons can include a business partner screwing you or just both events at the same time :)
For the same token I have seen companies get out of this predicament and they are doing extremely well now. So should they have thought; 'I'm not taking the risk, i'm paying everyone and closing the doors'? There was no in-between here; it's all or nothing in these cases. Sure you can say the growth rate was too high; doesn't that go for most invested startup companies in SV? I'm not sure it's as clear cut as you make it out to be especially if you make good on your employees with your next venture; i've seen cases were this was actually better for the employees as well.
I feel that stiffing your employees is deliberately going for BK to not have to pay wages etc; standing with your arms up high, he yeah sucks, but we're BK and fuck you very much for your support! At least here that's an official crime and you will pay the price if the curator can prove you 'went for bankruptcy' for reasons of not paying employees and other (notably tax) bills. But I can see enough reasons where this can happen outside your control as well.