I think DCC is aggressively pushed in Asia because of more profits. It has now spread to ATM's too. Last year when I was withdrawing cash at Delhi airport I got a message we are giving you the best conversion rate using DCC, with a button to continue or "cancel". It makes one think, cancel means cancel the transaction. When I hit cancel, it continued the transaction without DCC. I am pretty sure 95% of travelers at 1.30 AM, after 17 hours of flight time and more just want to get to their hotel and hit the sack. I expect that until regulators clamp down on this, this will proliferate.