>>200606920,000 miles over 20 years means those are bikes which never seen a real winter ride. Here's my wheel that saw close to triple that mileage over the course of 5 years doing courier work regularly being overloaded in aggressive stop and go traffic in rain, snow, and salt. I will say though, it takes a lot to crack a rim from regular use, I also frequently neglect cleaning and maintaining my bike during the winter months because it'll just get dirtied again so in reality, those rims could've lasted double the mileage if I was strictly a fair weather cyclist on top of my maintenance game, so yeah, your normal person wouldn't even come close to wearing out a wheel.
