As it has been typical for Apple services they aren't really useful outside of their home market.
Surely you know how silly that statement is when Apple Pay was late to the game in places like the UK where they were advertising this amazing new technology called Apple Pay and everyone just looked at each other like Apple had time travelled from 2002. Seriously, Contactless payment on debit cards was widespread in most of Europe by 2010, the only place Apple Pay is struggling is the US, because the banking system there is archaic.
Just to put that into perspective, a couple of banks in the UK were issuing contactless cards as standard just over a year after the iPhone debuted.