It is to move the burden of securing payments ("did the user actually, willingly, to the satisfaction of a court of law, initiate this payment?") onto Google and Apple.
Either the government secures internet payments themselves, which means spending now to do so, coming up with a plan, ... or they can have Apple/Google do it.
Either the government secures internet payments themselves, which means spending now to do so, coming up with a plan, ... or they can have Apple/Google do it.