I mean, selfishness is one thing, but these things literally won't fit in most parking spaces and even a number of garage spaces.
You can technically buy a bus, too, but most people don't think it's practical.
The race to size already happened in Europe once, when 4x4s started getting marketed to scared housewives under the pretense that they were safer, if that sounds familiar. I know a few people who were tempted.
Then they looked into it and got over it pretty quickly.
I'm sure you'd see some (I saw my first local Tesla the other day, the guy had blacked out the badge to avoid having it vandalized). I'm not sure we're going to see a race towards Europeans as a group buying humongous, impractical, extremely expensive cartoon trucks.