There are many old defunct software products that are no longer marketable. Is there any organization or group who helps to get these valuable codes released as open source?
For example, DEC had a product, VAXELN which ran on 32-bit VAX hardware. When they came out with the 64-bit Alpha, they did not port the product to the new hardware. They continued to support for decades but I presume long term government contracts have expired and it is now just rotting somewhere.
Such a group could help the companies understand the benefits to taking the action such as to society or their reputation.