It wouldn't kill Roland economically, to put out a demo of some zydeco, tejunto, cajun country, being played on the FR-1. There is a quite sizable market in certain parts of the States for accordions BECAUSE of these types of music and you'll see top zydeco and tejunto musicians touring world-wide... if you don't educate yourself about it, well, that's like Americans ignoring Tango, or Balkan music or Parisian Musette, or all of the other accordion musics that are out there to be listened to...
To be honest, there's as much interest in Tango over here as there is Zydeco in Europe. You just have to open your ears and go find the stuff..!
Roland seem to have lost their way marketing things. If Zydeco is a fair chunk of the accordion market in the US, why would you try to sell an accordion over here with traditional accordion demos? Make some cajun, zydeco, tejunto and rock/pop/folk demos, and they'll sell a LOT better, IMO...