Same situation in Canada. About 80-90% of retailers have contactless payment terminals. No Google or Apple Pay though. Tapping a credit card is easy enough though.
If I recall correctly, Google Wallet should work with any of those contactless payment terminals. I've tried it a few times in the US, anyway.
the problem isn't in the hardware. It is in the backend payment processing. Both Apple Pay and Google Wallet have hardware support, just not the banking relationships.
Probably better to support a platform agnostic solution rather than bolstering a manufacturer's specific option.