Why doesn't Alibaba occupy a monopoly position like Taobao?

Why doesn't Alibaba have the monopoly position like Taobao? Taobao has a large market share and a strong monopoly position in China e-commerce market, because it has been focusing on C2C (consumer-to-consumer) online shopping service, and has achieved great success and leading edge in this field. Taobao has won the favor of consumers by providing convenient shopping experience, diversified commodity selection, good reputation system and strong logistics distribution. As the parent company, Alibaba has other business segments besides Taobao, including B2B (Business to Business) Alibaba International Station and 1688 in the wholesale market. These business segments face different markets and customer groups, so compared with Taobao, their share and status are relatively small. Alibaba and Taobao are two different businesses under the same company. Taobao is an online shopping platform under Alibaba Group, and Alibaba is a comprehensive e-commerce giant, with Taobao, Tmall, Alibaba Cloud and other business segments.