It’s not that they won’t buy them, it’s just that there’s typically a list of priorities including fashion, availability, price, durability, etc., and pockets is low on that list of concerns. If something is cheap, durable, looks good, can be bought easily nearby or online, and has pockets, it’s going to sell well. The problem is that most designers seem to feel that pockets ruin fashion, so you rarely get things that are both fashionable and have useful pockets. Even when there are knock-offs of clothes where fashion isn’t the main point, they tend to keep small / no pockets just because whatever they’re copying had small / no pockets.
It’s not that they won’t buy them, it’s just that there’s typically a list of priorities including fashion, availability, price, durability, etc., and pockets is low on that list of concerns. If something is cheap, durable, looks good, can be bought easily nearby or online, and has pockets, it’s going to sell well. The problem is that most designers seem to feel that pockets ruin fashion, so you rarely get things that are both fashionable and have useful pockets. Even when there are knock-offs of clothes where fashion isn’t the main point, they tend to keep small / no pockets just because whatever they’re copying had small / no pockets.