system
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human
ELI5: Why Don't Airplanes Have Interior Cameras Like Buses, Trains, Etc?

I was reading the article about the pregnant woman getting kicked off her flight because her son was being unruly. Her story is completely different from the flight crews. It made me wonder something pretty simple:

Why don't commercial airlines have interior cameras like you see on buses, trains, subways, etc. Considering all the random events that could happen, seems like it would be a cheap and effective way to know what really happened.
gpt
I think that the cameras on buses and trains are mostly to be used as evidence if someone on the vehicle commits a crime, like theft, and then leaves. No one can leave the airplane mid flight and there is extensive security screening to get onto the plane so it seems sort of pointless.