I will agree with a subset of your proposition.
A system of agreed upon contracts by two or more entities, enforceable through a civil legal system, is a normal state of affairs.
Such a contract implicitly agreed upon by a vast number of third parties, and also enforceable against said third parties, is not.
It may have been an acceptable state of affairs due to technical limitation, but no longer. This system has been taken to its logical extreme and appropriated not for its original purpose of furthering of the arts through limited legal monopoly, but rather as having the primary purpose of giving individuals what are in practice infinite duration personal rights of monopoly, similar rights having previously been a means to an end.
At minimum changes and additions to these laws should be reversed. Quite possibly the entirety of the idea is no longer desirable.