if they go bankrupt, someone will buy their assets or end up in sale to someone anyways, and if they couldn't make enough money to continue operations maybe its not actually worth "hundreds of millions or billions"?

bankruptcy also gives companies a chance to redo things and get stuff in order to pay the debtors; it doesn't always end in liquidation.

in any case, its better longterm to incentivize survival of the fittest through competition than through golden exit as it is now...