There is a moral right to own that which you have produced, and it is definetely not an legal artifact but an expression of the concept of individual rights.
Furthermore, it isn't copyright that is preventing people from accessing the content, but the fact that these corporations have not evolved their business model to the way consumers consume content these days.
There may be several reasons as to why that has not happened (they may still be making enough money with their old business model and are risk-averse to try new things) but claiming that the creators of something do not have the moral right to own their creations is an absurdity.
"There is a moral right to own that which you have produced."
Sure. You produce a tool, it's your very own tool. You produce a painting, it's your very own painting. You produce a pie, it's your very own pie.
Ralph sees your Very Own Tool and decides that'd be handy. Ralph knows taking your Very Own Tool would deprive you of your property and decides he won't do that. Not to mention it's a physical item and the law has something to saw about theft of physical items. So Ralph, being the upstanding citizen he is, makes another tool just like yours - his Very Own Tool. Ralph's also a bit of an extrovert and tells everyone about this great new tool and other people want one. So Ralph sets about making more of the tool you designed to sell to other people.
Do you have the right to be upset at Ralph for making money off your idea without compensation to you?
Controlling copying of your creations is what copyright is about. It says that with respect to certain works, you as the creator own the right to make copies ... or to license other people (or companies) to make copies.
P.S. Now don't get me wrong - I understand that a tool design is probably best protected by patents. Maybe this "tool" is a sculpture that's also useful to accomplish a task. My argument is about "intellectual property" in general.
There isn't a moral consensus of what 'owning' entails. You seem to suggest that owning an item means that nobody in the world can make a copy of it without your permission. I don't agree with that.
Furthermore, it isn't copyright that is preventing people from accessing the content, but the fact that these corporations have not evolved their business model to the way consumers consume content these days.
There may be several reasons as to why that has not happened (they may still be making enough money with their old business model and are risk-averse to try new things) but claiming that the creators of something do not have the moral right to own their creations is an absurdity.