You assume they will come out. More likely everything will be sold. The value of the sale will be put in a pot, and that will be dished out to those owed money. Those most harmed will be paid first.

It is very unlikely Mt. Gox will ever reopen. It is unlikely anyone with less than $1000 in losses will ever see more than $20.

Except that exchanges need trust. Customers need to be able to trust that their money will be safe, that they can move their funds in and out freely, and that the exchange wont just take their money and run. This is especially true with an unregulated currency, like Bitcoin.

Do you really think that anyone will trust them going forward? If they can manage to get their business back in order, do you think that customers will go back to them as opposed to one of the other exchanges that now exist?

Plus, I was under the impression that one of the major reasons why US-based people still had accounts on MtGox was that it was so difficult to get USD out. It's not like they were winning customers before. A great deal of them were just locked in and couldn't leave.