And make that taxation progressive so it would be unprofitable to hold on to copyrights for decades. This feels even better than my idea about making copyright very short, on the order of several years — technically it would be indefinite, but only if you can pay the ever-increasing cost to maintain it.
The IP tax would also solve the status of abandonware once and for all — the company is no longer around to pay the tax on its copyright, so the copyright gets terminated and the works become public domain.
The IP tax would also solve the status of abandonware once and for all — the company is no longer around to pay the tax on its copyright, so the copyright gets terminated and the works become public domain.