The majority of aircraft passengers don't know, or care, whether they are travelling in an Airbus or a Boeing, much less a competing airframe from Embraer or Bombardier, but they generally have some expectations regarding size. If they are flying long haul, they expect a wide-body jet, probably with two aisles, and possibly with an 'upstairs' for the suited and the uber-rich. If it's a three to five hour flight, they'll expect a smaller jet with a single aisle and comparatively less in the way of comfort, while for city-hoppers a noisy box with propellers is the accepted norm. However, expectations at the lower end of the scale may be about to change.