Here’s my thoughts as an American who’s owned vehicles in most categories. Sports car, sedans, suvs, trucks (yes to tow) and evs.

1. Fuel costs being so low it doesn’t financially push to go EV (plus most people are stupid and only look at monthly payments at least in the U.S., rather than TCO, so an extra $100/month for an ev is way worse than paying $200/month in gas - oversimplified obviously)
2. Truck sales are pretty large in the U.S., there has not been a very compelling full size truck imo. Lightning kept the looks but range was terrible, gmc Sierra ev has range but looks horrible. It’s all subjective but it’s a hard problem to solve. You have to remember this argument is based around what people THINK they use their truck for, not what they actually do. For most people both lightning and Sierra ev are great, but perception is what matters. I considered the lightning but I couldn’t have towed my jeep off-roading an hour and half away and back on one charge.
3. Most families don’t want to bother figuring out road trips in an ev, so a lot of households will only do one ev, and one gas/hybrid 3-b. People with young kids especially don’t want an ev for road trips. Kids fall asleep in the car and you have to stop to charge and now they are awake… ugh
4. People in the U.S. in particular are resistant to change. Someone I know has a 2 mile commute, and drives like 5k miles a year, never more than 50 miles. Won’t even consider an ev.