I think if behavior needs to be regulated by government in order to be moral, then it's immoral behavior by default
The regulation doesn't make it moral, the regulation only limits the damage by limiting how immoral you're allowed to be
I have a hard time arguing that it's a net positive.
Without copyright it was hard to assemble high quality educational books/manuals, because they take a lot of effort with relatively little reward/return. In fact the first 'modern' copyright act in 1701ish was titled something about improving education.
Without copyright it is not worth it for authors to spend nights/weekends flushing out plot ideas for complete sharable works, so you end up with less/lower quality literature as no one can be a professional author. Which has better quality on average, published books or self published? Self published tend to be the 'passion projects' you would still have without copyright, published books tend to be what get's created when authors are compensated for their efforts. Society can't lose from copyright because without it the works would never have existed. If I say 'I'll bake a cake if you will buy a piece' and I bake a cake and sell a piece, society didn't 'lose'. If I don't bake a cake because no one would buy a piece than society was a little sadder, a little plainer that day. There is only upside, there is no downside. Anyone that would release if copyright didn't exist is still free to waive their copyright protection. So having it is the best of both worlds, those that want to release just to release can, and those that want to try and create something that can be sold can.
Without copyright there are no big budget movies, only passion projects because no one is injecting millions when the work will just be copied no sold/screened/rented.
Without copyright the world has less joy, less discussion, less contemplation, less entertainment, less education. Without patents the world has less productivity, less safety, worse health, less food, worse/much less clothing/housing, less free time. The systems in their current forms have been abused and are unfit for the original purpose but when kept to the original purpose with reasonable protection periods they are a HUGE net plus for society.
Patents and copyrights don't cause people to create things
They prevent people from stealing things that other people created
The immoral behaviour being regulated is the IP theft not the IP creation
Regulation is creating rules for businesses to run within. This goes back to rule of law. You can't tell a group of children to "behave" and walk away and expect good results and then call the children "bad" when they fail to behave.
Rather, you must give them systems to understand, to channel their energy, productively, in a way that matches the desires of the parent (government) and their strategies. Then you have to meaningfully punish those who intentionally break the rules in order to give those behaving the knowledge that they have chosen the good path and they'll be rewarded for it.
Free markets are not about "morality"/"immortality", its about harnessing an existing energy to make a self-sustaining system. A system a state is less good/interested at keeping going or unable to act quickly enough to move in. But part of creating that system is putting in guard rails to prevent the worst sort of crashes.
In the new world that's incentive for enough people to create. Let knowledge rein free.. bellowing through the lands.
I don't think its as simple as calling them immoral. Rather the immorality comes on them being poorly regulated. With regulated term limits on patents and copyright we create a world where an artist can create licensed product and protect themselves during the course of their career, and people are them able to riff on their works after some decades or after they pass on.