You assume the customer has the information needed to make that decision before the purchase. In reality, most people don't have a reliable way to compare the repairability of products/brands before making a purchase. Even if they did, if the majority of the market doesn't valie repair, that can easily ruin it for those who do. It especially punishes those who are behind economically and can't afford replacements or "authorized" repair options (assuming they are even available).