We had this same problem back in the 1990s, during the first moneypunk wave.  People are making the same mistakes, too.

Every good revolutionary knows that he or she must provide something to the people that the status quo does not provide.  Manhattan bars do not need Bitcoin.  Big, domestic retailers do not need Bitcoin.  (Don't trot out the 'no chargebacks' argument.  We tried that.  It didn't work.)

I am working with young entrepreneurs down here in South Florida to get small-scale merchants in Latin America and the Caribbean to accept Bitcoin.  There already are a bunch of programmers in Argentina who accept Bitcoin, in part to bypass their currency controls.  (Oddly, I'm not hearing much from Venezuela, which is even worse.)

One problem is that Bitcoin stinks of Silicon Valley, which is notoriously US-centric.  Tell a Valley VC that you are going for the international market, and he'll tell you not to 'dilute' your focus.  Down here, I defy anyone not to do international trade.  We have the world's two busiest cruise ports in Miami and Fort Lauderdale, which also are major pan-American freight ports, we are closer to dozens of foreign capitals than we are to Washington, DC, and all five major languages native to the Western Hemisphere are spoken here... often in the same sentence.  (English, Spanish, Portuguese, Haitian Creole, French; plus Russian, German, and Hebrew)

We don't need Wal-Mart to accept Bitcoin.  We have Gyft for that.

What we need is more remittance networks to major cities in the Developing World and more small-scale import/export.

Porn and gambling could drive demand and awareness, but those guys already know about Bitcoin, and they'll do their thing when they are ready.