I suspect at least part of this has to do with the fact that, relative to four wheeled vehicles, you can buy "impressive" motorcycles for relatively little cash compared to say, buying a truly performant sports car. Combine this low cost with an unrelentingly social pressure to show off, mix in one part social media and two parts a belief that you are invincible and I believe you'll have your cocktail of poor outcomes on fast two-wheeled vehicles.

It's not a characteristic of US automakers but of the status quo in any competition. The status quo power wants to keep things the same - that's how they got there, that's how they are making money, and any change destabilizes things and 'wastes' money: you're already (selling cars), what will you gain by innovating?

The revisionist power wants to become status quo. They need to beat the status quo power and they won't do it following the status quo's rulebook. They look for anything that might differentiate them, make them appealing to even narrow groups - they are trying to get a foothold and grow from there. They are cool, innovative, and disruptive, people think.

As soon as the revisionist becomes status quo, they adopt the status quo behaviors. Look at formerly revisionist SV.

“ The first archetype, Euro premiums, has an average labor cost of $2,232 per vehicle and includes premium brands such as Mercedes-Benz, BMW, Jaguar Land Rover, and Audi. This group is characterized by high production costs, complex design and advanced manufacturing processes, and strong labor unions. Within the category, German manufacturers face among the highest labor costs of $3,307 due to stringent regulations and high wage rates.

The second archetype, electric vehicle-only manufacturers, includes startups as well as more established players like Tesla, which do not operate under organized labor contracts. Their average labor costs range from $1,502 to $13,291, and they face high per vehicle production costs due to low manufacturing volumes. EV-only manufacturers also have been heavily reliant on government subsidies, which are now being cut back by the new administration.

The third archetype, mainstream model manufacturers, has an average labor cost of $880 per vehicle and includes traditional high-volume automakers from various countries. Japanese manufacturers enjoy lower labor costs per vehicle, with an average of $769, compared with manufacturers in the United States, where the average is $1,341 — a labor cost per vehicle that reflects recent historic union gains.

The fourth archetype, Chinese car manufacturers, has an average labor cost of $585 per vehicle, characterized by low wages and high efficiency. The group maintains the lowest overall conversion costs in the industry by leveraging its newer factories, efficient supply chains, and high production volumes” - https://www.oliverwyman.com/our-expertise/insights/2025/apr/...

The idea that hourly labor cost is the overriding issue or cost is generally false, a story told by companies to get corporate welfare (including protectionism) and play the victim. They aren't sewing t-shirts; there is far more to the balance sheet than hourly cost; even focusing only on labor, there is productivity.

My Vespa Sprint 150 gets ~100mpg around town. It cost ~$5000, much of which is a brand premium. 150cc scooters from other brands (Genuine, etc) are much less.