What I’m getting is a publisher/author releases a book and twenty or thirty years after it has gone out of print they should be considered forfeit on copyright if they haven’t or can’t produce reasonable proof that they are using it. Thus it moves to public domain. I know of very few companies that don’t continue to use their IP in some form. So it wouldn’t be much of an issue except in areas of interest such as ours where games die out from lack of interest.
Unless we are talking about successors in interest to the initial IP creator, I think that is too short a term.
And I realize you're just spitballing, but matters of proof could be sticky, and it is conceivable that different forms of IP might require different time periods.
Then there is the issue of subdivisibility. Consider the estate of any great musician, such as JMH, mentioned above. Would the successors- the heirs/managers of his estate- have to release ALL of the available recordings in the estate in some form during that time period in order to keep any given one from falling into the public domain, or would all the recordings in the estate have their copyright continued if only one track is released?
Or an excerpt of one track?
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