This is good for the overall market, Apple users and Fitbit/Samsung/other Android alike. Apple pay definitely seems to be the popular solution near me (if a store doesn't have on the screen all the logos, they're most likely to put an Apple Pay logo on the reader alone; since they rely off contactless MSD/contactless EMV standards, all the mobile wallets work similarly at supported terminals).
Apple continuing to push transit contactless will be to the benefit of everyone - both in non-transit and transit scenarios alike as people get used to using their phone in contactless mode for payment.
People often misinterpret Apple Pay as charging a merchant cost, but it's to the issuing banks - Apple takes 15 basis points (or 15 cents on every dollar) from the bank that issued the credit card out of the cut of swipe fees remitted to the issuing bank. Since Apple Pay provides strong authentication (Cryptogram + PIN or fingerprint +
CDCVM (if supported at terminal) the banks find this cost worthwhile versus fraud & cardholder satisfaction, but the actual retailer doesn't pay any more.
For certain terminals contactless transactions make it more convenient over cash/dipping and process online in credit mode (with 2-4% swipe fees) rather than debit mode (for PIN debit at large merchants, PIN debit from banks is capped to 21 cents + 5 basis points [5 cents on every $100] per transaction for banks with over $10B in assets). This is why Walmart chose to pick terminals not compatible with Apple Pay and back CurrentC (and when that failed, launch Walmart Pay instead), and why Target pushes Circle (formerly Cartwheel) and Kroger pushes their own payment app.
QR Codes are way clunkier than tap payment and even Chase couldn't use its inertia to make QR Code payment work (Chase Pay is being retired for in-person purchases early 2020).