The profit of Apple's computer business can account for more than half of the global notebook computer profits all the year round. Even AirPods on the rotten street, everyone thinks it may be a small accessory, but they don't know that the profit of AirPods products in 19 exceeds that of the whole Xiaomi Group. iPhone is also Apple's trump card, occupying more than 60% of the profits in the global smartphone market all the year round. In terms of profit, the profit of iPhone is amazing, and he took the bulk of the whole smartphone.
Moreover, Apple's technology is too comprehensive, with its own mobile phone operating system, system operating system, its own programming language, its own cloud service, its own office software, its own browser and its own chip. What's more, most of these technologies are the first in the world. Some of them are even among the best, so they form a monopoly to some extent. This is also the reason why Apple can have a market value of 3 trillion.