Do you have a source for that? That's the first time I've heard about that and with leasing being so popular I don't really see this being true. Especially when observing people around me (Austria, Germany).
Source https://de.statista.com/statistik/daten/studie/36714/umfrage...
In France in 2019 2.61 used cars were sold for each new car.
This would be 85% used cars, 15% new cars.
The average age of a bought used car was 13.3 years.
https://www.kauppalehti.fi/uutiset/uutta-dataa-kaytetyn-auto...