I’ll be honest, I’m very confused about what you mean when you say that Google Wallet isn’t a thing. I pay with my Android phone everywhere, so ubiquitously that I’ve frequently left the house with just my phone and keys.
Do you mean America, where contactless payment is far less frequently accepted, or the concept of clicking on a “Pay with Google Wallet” style prompt on a website?
I’m an American android user and I’m confused too. At least in my area, contactless is pretty ubiquitous now. (I accept adoption is slower, but it’s getting there)
Sure Apple Pay seemed to come to a lot of terminals first, but NFC Google wallet or whatever it is the phone does automatically I’ve only seen fail at certain terminals. In that rare case, usually someone behind me with Apple Pay often also fails, so I’d be more likely to attribute it to a system glitch rather than lack of support.