what if the creator is a company? They are allowed to hold copyrights.

Though one answers is: 95/120 years.

"If the work is a joint work, the term lasts for seventy years after the last surviving author’s death. For works made for hire and anonymous or pseudonymous works, copyright protection is 95 years from publication or 120 years from creation, whichever is shorter"

https://www.copyright.gov/what-is-copyright/

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