To start with one's own products, though control is entirely within one's own hands, because production volume is small, it is hard to attain economies of scale, and costs aren't competitive.
一開始就自創品牌，雖然一切掌握在自己手中，但也有因產量小，達不到經濟規模，以致成本無法和別人競爭的缺點。