The "copyright infringement (is / isn't) theft" argument is drivel on the same intellectual level as "corporations are people."
The corporation you probably thinking of right now is a small private government to run a for profit endeavor. But note that cities are also corporations.
Probably want to contact a lawyer for the nuances, but the thousand foot view is you create a corporation with yourself as chief officer, and others as backup officers. set your corporate law to make your backup officers useless until the death of the chief officer and strict guidelines as to how the backup officers are to manage corporate assets. then finally transfer assets to the corporation.
The point being, the thing that makes a corporation a corporation is its corporate law governing its members, thus the assertion that corporations are not people, they are governments.
1. Movie copyright is compared, by its owners and the law, to physical theft. This type of theft does not remove the physical use or any use from the owners.
2. GPL copyright only requires sharing changed code. Failing to disclose the changes actually does affect the owners in the way claimed.
They’re two different social contracts and we need different words for them. Honestly many social problems are like this.