I have multiple Xboxes and game share most of my games with my wife so we can play together. Most games allow this without me having to buy a second copy. Anyone know if BDO allows this? Or is it like ESO and I will have to buy multiple copies?

No, the game is tied to the account.

search the forum you'll find couple of posts on the subject.

apparently it's not going to happen because it's tied to the account like  mentioned. and it makes sense because if you've played the beta, every time you go into the game, it asks you to sign in (asks you to choose your account/GT).. so it's tied to that account..

however, i still have a little hope that we're getting this to share.