The sheer # of children with their underpants on fire here at MR because of this is astounding.
1) This is two pay formats competing with each other. It's business. Nothing more or less. Their is no "anti-trust" because none of the companies hold anything close to a monopoly. You all that think there is some sort of "antitrust" do not understand the difference between competing vigourously in the marketplace and grossly interfering with the marketplace. (Sports analogy: "American Football" player jumping up in front of opponent to tip the ball vs. same player grabbing opponents body so he can't catch the ball; i.e., player interference).
2) NFC is not a human right or even a consumer right. Companies choose whether they want to use it or not. Fact: companies do not even have to accept credit cards, check, or in the U.S., U.S. currency. They can operate totally on bartering if they wish -- not a great business model, but not illegal either.
3) In the U.S., up until Apple Pay, NFC was almost unknown to consumers. I'd bank that many consumers are not even aware Apple Pay uses NFC. This is not like something was taken away from consumers. Shoppers habits are more complex -- what side of the road is the store on, best non-sale prices, cleanest store, helpful staff, etc. It's not just one factor like do they have NFC terminals.
4) Normal people do not shop somewhere because a sub-method of payment isn't accepted. They are not going to not shop at MCX stores because NFC is turned off because they still have the swipe terminals. Similarly, people are unlikely to shop at NFC stores specifically because they do have it.
5) What will get merchants attention is if NFC payments offer an advantage to them. Apple Pay, supposedly, offers excellent security. MCX, who knows, but it's their "baby," so it better. Cost of maintaining NFC vs MCX is another factor. Most important is consumer adoption; no customers, no point. Both NFC and MCX require consumers to use an app to store their information in order to function. That's the biggest barrier to entry of all. Sponsoring companies are going to have to promote the heck of their respective system. May the best one win (NFC).
It's going to take a year or two for all this to shake out. MCX has a slight advantage it's consumer end doesn't require the newest tech.