Often, there is less practical difference than I’d hope for. Look at the credit card networks’ sanctions of things like allofmp3.com, for example.

If you enjoy audio fiction, or short stories you might enjoy “The Revolution, brought to you by Nike”. It was written by an ad industry insider, and touches on a lot of issues regarding corporate self-censorship. (It’s a few years old, and predates Nike’s recent political activism):

https://escapepod.org/2018/09/06/escape-pod-644-the-revoluti...