Purposeful Obfuscation

Today I signed a contract. It was after a lot of reading, and re-reading of legal jargon. Legal jargon is expected with any contract or terms of service. A recent study of them revealed that they are written at levels that most people would be unable to completely understand, even if they were interested in reading them.
https://www.nytimes.com/interactive/2019/06/12/opinion/facebook-google-privacy-policies.html

As with bizarrely difficult interfaces (see yesterday's post), why make something confusing on purpose? I can only guess that it's...

- To obscure its purpose.
- To make the user feel unsure.
- To control user behavior.
- To get a user to make a snap decision.
- To exhaust someone into complacency.

But why? Could it be...

- To get a user to buy without thinking too much.
- To implement a gating system.
- To hide flaws.
- To create an inside track.
- To compel actions that are different from what appears to be the point.

My guesses still don't help me understand what the heck is going on with Pages.