It doesn't affect the utility of the trade-off, but all else being equal we usually accept what exists now. Fighting what already defacto exists is hard-- either as lone consumers, where we're tilting at windmills to little effects... or as regulators, where we risk unintended consequences.
> "Kindle tracks every page turn in order to determine how long you have left in the book" would be a statement of the trade-off
Nah, Kindle tracks all these actions so that developers can improve ux and understand how the device is being used. Wonder how often people turn pages by mistake? Look for quick pairs of page forward with page backward. Then maybe you can think about touch sensitivity. How much will be people be annoyed if you remove the buttons? See what proportion of users exclusively, mostly, or don't use buttons.
> If it's wrong for one person to do it, it's wrong for everyone, even if all people are doing it.
It's wrong for anyone to abuse the information. If we have an industry of people using the information ethically, and then one bad actor misuses the information, we need to consider that background. Do we take measures solely against misuse, or do we attempt to stop the collection to have more certainty in stopping the misuse?