This is naive. People act in patterns. People who steal without repercussions will continue to steal. If you steal Jay-Z's Watch the Throne and like it, are you going to run to Amazon and pay forThe Blueprint and The Black Album and the others? I don’t know about your planet, but that’s not about to happen on mine.
Downloading a movie is not necessirely stealing - which is what corporations would like you to believe that it always is. It's often learning and trying things out if done right and fair.
In the world of many reasonable IT companies it's pretty much a common opinion that piracy helps you with marketing of your products if they're appealing to your customer and you're able to provide them in a correct way. People who won't download your product wouldn't buy it at all, perhaps wouldn't even know or be interested in the type of products that you sell. If you really like something you don't download that if you're a "real pirate", not a bitch.
Even if you're an immature teenager who "doesn't give a shit and downloads like crazy" you will once grow thanks to things that you downloaded, grow interests and start buying these things. A guy like that wouldn't buy games if he didn't pirate a copy, play it and like it.
In the video game industry companies only condone chasing pirates if they know that in the future they might make a product that will not necessirely be too great, that will get boring after an hour or are very shallow. They want to blame piracy for their failures, and they believe in that themselves. They would like to chase people down and sue the shit out of them because they want money from them, and stupid reasons to get more money.
A great example here would be the Witcher 2. It contains no anti-piracy systems because the developer did not want to make life any harder for people who buy the final product (pirates usually get better, cracked versions), because they did not believe that piracy reduces game sales. Furthermore, it was developed and published by a Polish company, which is where piracy thrives, and it was one of the most pirated game worldwide. They had little marketing money. Results? The game is one of the best selling RPGs and it was only released for PC so far.
If they started calculating losses like some companies do they would probably come to conclusions that if it wasn't for piracy almost every person on our globe would buy a copy. Of course that's bullshit.
What's ethical, what's not? You either get fooled by huge marketing campaigns from companies that spend millions of dollars to make you buy their piece of shit game that you will get bored of after an hour (or keep playing believing them that it's good) or try it yourself and then if it's worth it, buy it. On another hand you have "evil people who buy a game and share it to other people, some of which might download that INSTEAD of buying a copy so developers won't get that money". From my experience the former is waay more widespread. I agree that both options suck and there should be a solution to these problems. If it comes to the latter one I already mentioned what I think would be fair in my previous post. There's still no solution to the former problem.
In the end, there's research claiming that piracy might indeed boost your sales, and even the most "anti-piracy" (but reasonable) research states that if piracy negatively affects your business, the losses are almost negligible.
About the world that I live in? I and most of my friends who used to download things have original copies (including collector's editions) of things that they like. They wouldn't have found them or be interested in the genre in the first place if it wasn't for "trying things out" in the past.
Years ago when I was a teenager I would listen to hundreds of cds (I wouldn't buy any of them) that led me to a position where I bought quite a lot of cds that I used to like in the past. Same with video games - I bought more than I ever 'downloaded', and I wouldn't have bought perhaps any of them if it wasn't for pirated copies that I tried back then. Now I don't have any downloaded copies at all.