I can assure you, we are not that old. For works created in 1978 or later (which is the case for these) work-for-hire pieces like this get 95 years of copyright protection:

https://www.copyright.gov/help/faq/faq-duration.htm

So we are solidly inside the copyright window.

The entire player base will literally die from old age before the copyright expires.

Sounds reasonable.