That translates into very long wait times to fix your car (they haven't scaled those yet, and they are exclusive, so it's a bottleneck), and higher costs. Not to mention that parts aren't available that quickly since they have a limited production rate and have to decide what % are used for repairs vs producing new cars, and guess who impacts the bottomline the most? Then higher costs of repair translates to higher premiums.
BTW I'm not complaining that the repair/service centers do a bad job - I've generally had a good experience with them - but their scarcity and exclusivity is an issue.
It can turn a minor fender bender into months-long waiting game without your car (it's "at the bodyshop waiting for parts").