We can agree on what words mean, as long as you don’t make up your own definitions. I do agree it’s a waste of time if you can’t use something even remotely close to the agreed-upon definitions in the dictionary.

Here are some definitions that seem more reasonable:

https://www.dictionary.com/browse/sell

https://www.dictionary.com/browse/buy

(Note neither of these involve use of the word “control”)

Here is the text of US copyright law, I recommend reading it:

https://www.copyright.gov/title17/