Alternative link where I’m told the story is written better, but unfortunately has a signup wall and I’m not willing to sign up https://www.404media.co/paralyzed-jockey-loses-ability-to-walk-after-manufacturer-refuses-to-fix-battery-for-his-100-000-exoskeleton/
Nio is one company that does just that in China, i’d assume swapping battery is expensive though so the use case is still limited.