Why is it so difficult for airlines to sell WIFi annual cards ”free traffic” on board?

In fact, it is really not a bit difficult to ”pull broadband” at an altitude of 30,000 feet. Hello everyone, today let's talk about the principle of WIFI on board and why it is so difficult to realize the freedom of cloud traffic. Netizens who have connected WIFI on the plane can take a bubble and share their experiences.

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马斯克的星链可行吗