Maybe they want to buy it for all the account data. E.g. It takes a lot of time (and money) to check and verify all the personal passports.
A business can start all over with zero customers, but what if you can start with hundreds of thousands of verified customers...
But of course they cannot assume that every customer of the old MtGOX wants to be a customer of the new one, so customers would have to explicitly open new accounts anyway. And the liquidators cannot sell to the new firm the ID/passport scans of people who do not want to be customers, can they? (If they CAN and intend to do that, then that is one one more bad reason for them to want the takeover.)
When someone dies, he gets buried or cremated, and that is it. No matter how much relatives and friends miss him, they won't go searching for a doctor who can bring the dead back to life. Companies are like that too. Wen a company dies, it dies, and that is it. Anyone who claims to be able to bring it back to life is srely a charlatan tring to swindle those who miss it.
