Unless there is a financial incentive to do so the costs to archive might be too high unfortunately, especially given the circumstances of the previous merger/acquisitions and licensing, the people responsible for the data were “right” to no longer bare the cost. It’s unlikely there is a physical hard drive of this stuff and even if it was then the hard drive could even have been repurposed or reclaimed. These are businesses at the end of the day and once the product ships, unless they own the IP there’s no reason to keep the data. Hell it could have even been in the contract to delete any Hasbro data after the license expired, and Hasbro never kept a copy themselves.

Culturally, and for the sake of a game library archive pirates are picking up the slack where elsewhere there are non-profit or government bodies responsible for archiving like the National Film Registry https://en.m.wikipedia.org/wiki/National_Film_Registry