Players with complex ecology and relationship network have such an advantage: they don’t need to pay close attention to the gross profit margin (Grossmargin) of any single transaction, but can use relatively generous terms to form alliances with many potential partners, because this The resources introduced by the alliance are easy to spread freely and quickly within its ecological network, bringing long-term and continuous indirect benefits to other businesses, such as reducing unit customer acquisition costs and increasing actual operating margins. For example, if Amazon sells a pair of shoes with a low profit margin, it may indirectly increase the sales of digital products with a gross profit margin of 100%. More importantly, this potential advantage will increase and strengthen as its ecological scale expands. It makes potential opponents even more incomprehensible and helpless. On the premise of not consuming too much of its own scarce bottleneck resources (such as time), continuously actively expanding the scale of cooperation with the outside world is a shortcut that can truly last for a long time to improve its own profit margin and efficiency. This principle applies to both companies and individuals.