It fits into a broader pattern of hobbies turning into trends, and then products, I guess. Social Media and E-commerce + dropshipping, optimized supply chains

It fits into a broader pattern of hobbies turning into trends, and then products, I guess. Social Media and E-commerce + dropshipping, optimized supply chains etc brought it to a new level though, in all kinds of domains. Audio equipment, musical instruments, sports or home accessories, for example.