> People don't grasp how easy it is to build data models like this even without privileged first-party data access.
People on this site probably understand this better than 99% of the world.
The problem is "What can I, as an individual, do about it?"
block ads, stay off most social media, don't use mobile devices while traveling
> don't use mobile devices while traveling
Some airlines don't even allow you to check in without using their app, unless you are willing to pay for a fee.
You can also exploit it for personal profit. As for stopping it, good luck. Best case is probably to degrade or poison data sources in a preferably legal way.