American vendors aren’t producing more EVs because EVs don’t have mass appeal

You’ve got that backwards: there’s less people buying American EVs than there should because there aren’t enough and cheap enough options from American companies.

Just about every other car maker on the planet has several popular EVs on offer, though, so they’re shooting themselves in the foot long term to avoid the expense of pivoting short term.

the market clearly cannot bear mass adoption of EVs at this time

Again, you’re wrong. I suspect you’re taking the bad build quality of Teslas specifically beginning to hurt their sales as a sign that all EVs are unviable. That’s not reality.

the buyers for all those EVs we were making don’t exist.

Again, other way around: people WANT EVs, but American companies are hardly making any good ones available. Almost all other car makers are, though, at increasingly competitive prices too.