Wow, you named one. Congrats. I'm referring more to small businesses. To name a few I've seen: A bed and breakfast I stayed at in Tulum, a cellphone repair shop not far from my home, a small theater also near my home.
Bitcoin has better characteristics than the USD. If people continue to see that, it'll succeed. There's of course an element of speculation when buying bitcoin -- I'm hoping other people see value in a currency which can't be manipulated by governments, can't be confiscated, can't be censored, has a known supply, can transfer instantly anywhere in the world, and anyone can open an 'account' with.
To quote Julian Assange: "Bitcoin is the real Occupy Wallstreet".