1. Piracy allows people to "try before they buy".
Against the intention of the developers, who made the product.
2. Piracy allows people to dodge some of the crap enforced by the publisher (and it often has nothing to do with the software itself).
Against the intention of the publishers, who publish the product.
This is interesting - so you care about the intention of the publisher and the developer.
What if the intention of both of them goes against my interest. What if their intent is to mislead and scam me?
(To give some examples: that would be fleecing people with microtransactions and DLC, early beta versions as release builds, forcing always-online for single player games)
In such a case your one-sided moral evaluation of piracy might become problematic for you because the developer and publisher does not enjoy the benefit of default moral high ground
and piracy becomes an act of insuring or protecting oneself against possible scam.
Still, I don't care about "intentions" or "good feelings". I care for something that is enforceable. And speaking of enforceable things, please see below:
It's true. Forgetting about the law for a second, what makes you think you are entitled to a product you aren't paying for?
This one's quite easy to turn around. What makes someone think they're entitled to somebody else's money?
A valid contract of sale is a good enough answer, though in contracts of sale usually the rights of the buyer are secured in some way if the seller fails to deliver.
Piracy obviously doesn't have any of this, and I believe it's fair -there's no contract, I paid nothing and in turn I don't expect any support or guarantees from the developer.
Now, we're entering a nebulous ground - at which point can I say that I have, for the lack of a better word, "experienced" enough of the game
that the developer is entitled to their pay? Is it the fact of installing the game on my system that matters?
Say I watched the entire playthrough of Hellblade: Senua's Sacrifice on youtube. There's actually no difference in me doing so, because the gameplay is non-existent.
I experienced the entirety of the game's story, the assets and atmosphere, which was all it had going for it. I may have even liked it, but I don't really want to re-play it. It was good for one go.
Should the devs be entitled to take my money at this point? Let's assume foir the sake of argument that they do, what if buy the game and gift it to someone after a time?
Or a different situation - my brother is watching me play a game. Should he be charged by the developer for watching? (Hey, I heard there are console systems out there
that can detect the number of persons in the room, so it's not entirely out of the question, technically speaking) Do I tell him to sod off and buy his own when he wants a go?