Actually I hope they do. I am aghast at how fast people will jump into something just because Apple's name is on it when we don't know all the catches. You are effectively paying Apple to make a purchase, one you could make without yet another party interjecting itself into the stream.
I do not like adding touch points. If it means I have to swipe a card, I prefer signing all receipts, instead of just having my phone I am more than willing if one less exposure is available.
And it is entirely worth using it. Even from my limited experience using it (walgreens and lunds are the only places it currently has worked), it is miles better for paying things. No swipe, no receipt, no hassle with the stupid touch screens etc... I may not like the intervening data aspect of all electronic, but after using it its like the move from writing cheques to credit cards.
I hope those other places do say no to apple pay, I'm already planning on ignoring buying from them for their refusal to make my life simpler and get out of their store.
I don't care how, I just want to get the paying part done in the least possible effort. I'm lazy. At this point I get mighty vexed when I can't just touch my card and have to actually put in a pin number.
[0]: http://allthingsd.com/20120430/paying-with-squares-new-mobil... [1]: http://www.theverge.com/2014/5/12/5709256/square-kills-squar...
You should chat with class-action lawyers about the history of companies and billing practices.