Happy Birthday is undoubtedly a work of art, albeit a rather trivial one, and the copyright clause extends protection to authors as well as inventors; I just think that its term of protection is long since expired.
I think things like literature, theater, and so on have considerable social utility and don't care for your restriction to industrial applications.
Plenty of works are created without direct economic incentive associated with copying the work. Just look at non-commercial YouTubers or open source projects.
As far as arts go, many non-commercial offerings are deeply lacking. Removing the economic incentive reverts the arts to a system of patronage and arguably subverts artistic freedom in many domains (eg theater) by limiting output to suit the whims of the economically powerful.
I think things like literature, theater, and so on have considerable social utility and don't care for your restriction to industrial applications.
Plenty of works are created without direct economic incentive associated with copying the work. Just look at non-commercial YouTubers or open source projects.
As far as arts go, many non-commercial offerings are deeply lacking. Removing the economic incentive reverts the arts to a system of patronage and arguably subverts artistic freedom in many domains (eg theater) by limiting output to suit the whims of the economically powerful.