Tickets soul bound not account?
The reason is because when the tickets were first introduced, ANet rewarded each player on the account with 5 tickets. Some sneaky players realized that by starting new characters, they could obtain new tickets.
It only took a few moments to create and delete new characters, so tickets were easy to get.
ANet, wanting players to spend real money, realized this was a mistake, so instead of simply stopping the emails, they made them soul bound.
So, in ANets eyes it worked because players are now “encouraged” to grind tickets, but for the players it sucks because it doubles, triples, or quadruples the time required to gather tickets, and fight in the ring.
Band-aid fix for a poorly thought out design.