Rich Mogull explains why some merchants are turning off NFC terminals at TidBITS:
Merchants aren’t blocking Apple Pay to collect data on us. They aren’t doing it to spite Apple, or to pressure Apple into giving them a split of the profits. While those might be factors, the real reason is a deep-seated, and possibly well-deserved, hatred of credit cards.
Apple Pay is collateral damage in a war between retailers and credit-card companies. The good news, as Mogull confidently writes, is that this is “a fight the retailers will lose in the long run,” because it degrades the customer experience without any customer benefit.