A lot of people finance their cars over 60 or 72 months so I guess the couple thousand difference doesn't factor in that much, at least that's how I think it'd be. People finance phones through carriers even if it costs a bit extra over a long term period and maybe that applies to cars too? Either way, crossover sales are sky rocketing in the U.S. to the point where for the first time ever, a crossover outsold a sedan (Rogue outsold the Camry) and the Camry competes in one of the most competitive segments on the market. The iA is very cheap and affordable, but bigger cars are just as affordable as well and with Hyundai/Kia offering so much features at competitive prices, value is pretty good. Subcompacts are a niche segment and it wouldn't be surprising if it died out in the U.S within the next couple of years.
As for me, I love small cars though. I'd take a Mazda3 over a Camry or Accord any day. But what I love even more than small cars are hot hatches, and Toyota's built a hot hatch Yaris overseas. A small car and a hot hatch? A Small hot hatch? OMG gimme!!