You can PLAN on baking that in - however you absolutely can not predict on a new product the utilization of that service. You can make an estimate (to your point, you can estimate how long a suitcase will take to break, cost of repair, and then calculate who will fix it vs buying a new one, then offer a “lifetime” warranty) but the issue with that is this is a new field, and a fundamentally new model they are proposing.
Hm, I see your point. It is true, it COULD backfire horribly. So my guess is they are betting it won’t and people don’t need as much storage as they think they do. The 6000 units are to prove or disprove exactely that.