> At which point, the continued march towards higher resolution and bandwidth video will probably limit their utility
Just as the patent system intended: maximum extraction was enabled while the product was useful.
[the United States Congress shall have power] To promote the Progress of Science and useful Arts, by securing for limited Times to Authors and Inventors the exclusive Right to their respective Writings and Discoveries.
https://en.wikipedia.org/wiki/Copyright_Clause
The purpose of the system as it was originally conceived was not to provide maximum economic extraction -- the purpose was to promote the progress of science and useful arts.
It is not necessarily the case that the maximization of economic extraction coincides with the progress of science and useful arts.
Intellectual property is total bullshit as a concept but I suppose patents are at least tolerable since they only last 10 to 20 years, unlike copyright which lasts for our lifetimes plus a million billion years.
Now if only copyright didn't last forever..