For the same reason Tesla built a roadster to start their company. Low volume and high margin is MUCH easier to achieve when you are small than high volume and low margin.
Watch Shark Tank for a while and you'll realize that even if you have a product people want, it's not trivial to scale a physical product business unless you have significant capital. Even if you reinvest the money you make, you are constrained by how quickly you can turn the money over.
Watch Shark Tank for a while and you'll realize that even if you have a product people want, it's not trivial to scale a physical product business unless you have significant capital. Even if you reinvest the money you make, you are constrained by how quickly you can turn the money over.