But if, for instance, you're hauling lumber then most small cars are not going be driving great. Ditto if you have to move a family of five (or more). So without your definition of what 'well suited for highway driving' is specified in terms that I can appreciate that do not include the actual driving characteristics of the car then it is very hard to have a productive conversation, regardless of 'corporate wealth hoarding' or other off-topic bits. FWIW I've had just about every type of Citroen and without exception they handled very well within their respective weight class, and they also held their own in terms of hauling capacity. Reliability, now that is something where we can probably come into agreement, the French car industry for the longest time had serious issues (but not as many as their UK counterparts). Even so that too is a thing that is mostly in the past.
And it's not some niche car, it's one of the most sold compact cars on the planet. And the 2026 versions are actually slightly lighter at 1025 and are very comfortable.
Of course comfort is up to interpretation, and as cars get better, our window of expectation moves, the cars my dad used to drive for 8 hours in a row for our summer vacations in the 1970s are considered ridiculously loud and cramped by today's standards. Just like Kings of the past had no tropical fruit in winter, while even unknown shitty corps hand them out for free to their unpaid interns at this point, our standards move.
But even with today's standards I think a modern Yaris at 1 ton (+2%) is completely fine for highway driving.