Americans -- and to a lesser extent, Canadians -- are obsessed with *trucks*. The best-selling consumer vehicle is a pickup truck, which outsells even the Honda Civic. Not that long ago, crew cab (4-door) pickup trucks were about as common as unicorns; now crew cabs (with full leather interiors) seem to be only model sold. Light trucks (which include "sport utility vehicles" in both body-on-frame and unibody models) have crowded out cars from the market, explaining why GM and Ford no longer sell cars / sedans here (with the exception of the Mustang and Camaro). (OK, Cadillac also sells sedans but they are as common as unicorns.)
If an automaker wants to sell a car here, it has to be a lifted model (crossover), which, I guess, is why the Avalon's replacement has to be a Crown Crossover.
As gasoline prices get more expensive, we will start to see more alternate-fuel trucks and smaller, car-based pickup trucks -- like the Hyundai Santa Cruz and Ford Maverick (and maybe Corolla pickup?). Ford is selling the EV Lightning pickup truck; GM has the EV Silverado and Sierra pickup trucks on the way and also the Hummer EV. These are huge, heavy full-size pickup trucks.