If I'm a seller, it doesn't matter to me one whit whether the money that I don't get ends up in the pocket of the bank or the broker or the government. I really don't care whether you call this lost money a tax or a commission or points. All I care about is that it's money that the seller was willing to pay that someone else gets to keep and not me.
Both of those are different things than paying money to the government just for the privilege of consummating the transaction.