the wiki page describes a little bit about how they ended the services, basically claiming that they got hacked. not sure about the truth of this, but it was described that the rest of the funds that were not 'hacked' were returned to their users.
Well, to be fair, it's not farfetched to think that exchanges use this excuse to cover themselves. Not saying they really did an exit scam though, I definitely wasn't in the bitcoin space at that time.
For example, the first exchange was not Bitcoin Market but waybackmachine.
What? Waybackmachine is an exchange? Or did I misunderstand what you're saying?