Because it is bartering? Who said it isn't?
my post was kind of redundant. but what i mean is, why not just trade wallets now? since people say they can make more than one wallet. why not just trade the wallet in tangible form, and give up the key. can't the key then be changed by the new owner?
Each wallet can only have 1 private key
And if you give B your wallet, now 2 people has access to the private key
And B gives C and now more and more people have access to the private key, where ANYONE can spend the funds in the wallet.