The problem with this approach is that I believe fighting DCC needs to reach critical mass for the brakes to be applied at non-compliant merchants. For example, some of the major chain hotels in Mainland China used to apply DCC routinely until they received many complaints. While we're vocal, I would say those complaints were more people than just the contributors on this forum. Another case would be Rainbow in HK.

There are some who refused to be educated or say, "I don't really care," but I would say the majority appreciate the education. When you explain it in terms of the merchant stands to make a profit off of your ignorance and it can cost you up to 8% more than you bargained for, people start to pay attention. (I then educate if people have cards with a FTF.) My explanation is that if you received a bill for $100 but then the waiter ran your card and it was charged $105, you would raise a fuss. Unfortunately, DCC is sneaky enough where people don't know they're being ripped off even though the markup is listed on the receipt. The two currencies and uncertainty about the exchange rate between them provides enough cover to continue the con.

I say this from the perspective of an active member of FlyerTalk who used to get hit with DCC without realizing it until 2013. Amazingly, I never got hit in Taiwan during my first couple of trips there. I think this was largely due to them generating the quote slip and proactively offering the choice of currency. Since I knew my card had a 0% FTF, I figured it was better than whatever rate they would give. I didn't know this was called DCC at the time nor how pervasive the problem was. I'm certain others could be similarly educated and brought on the bandwagon.