I generally think that copyright should have to be extended every 5 years for an escalating fee. Part of the scheme is that to extend the copyright, you must list contact information for the current owners of the copyright. All these numbers below are purely examples of the kind of scaling I think should exist

So, from creation 0-5 years everything is automatically instantly copyrighted (as it is today). 5-10 years you must manually extend the copyright and it costs $500/work. 10-15 years it should cost $5,000/work. 15-20 years $100,000/work. 20-25 years $500,000/work, etc. By the time we're at 50 years, an additional 5 years registration should cost hundreds of millions of dollars, and would only be done for the _most_ important properties (like The Mouse).

(In my ideal world, these fees would go into an arts fund in the federal government that could be used to encourage the creation of less financially viable arts, like local theatre programs, arts education for children, etc)

In such a scheme if a work is particularly valuable (either because it's being mass distributed, or because it has value in not being mass distributed), then the owner could maintain the copyright, but it would just be totally financially non-viable for these kinds of abandoned games to remain locked up. There'd be absolutely no business case for it.