> I can play physical copies of music and movies wherever I happen to bring them

Wait, can you? In the US and EU, physical copies are for personal use only. Where are you that this would be legal?

Depends on the country, over here i can legally share it with friends and family. As in legally create a copy and gift it.

I can't mass print/burn/copy copyrighted works, but the key word here is 'mass'.

You're right, I should have qualified that this is a limited use. But the limit is, in practice, quite fluid. They won't make a lawsuit over a slumber party. Probably not for a meetup. I expect they will for a theatre. Will they for a dive bar with a bunch of old CD's and DVD's? Or for a funeral?

The selective enforcement exposes to me that it doesn't really have a ethical leg to stand on.

The ability to do something and legality of it are mutually exclusive (ETA: oops, I mean independent of one another). OP appears to be making a moral argument anyway.

Regardless, no one will magically show up and break arbitrary cd player functionality like they are remotely disrupting Internet access if someone pirates la Liga.