It doesn't matter if piracy is good or bad for the industry. All that matters is that its their property and not yours. If they don't care about people pirating then fine. Its like how some bands allow people to stream their music on youtube and others constantly get their music removed.
The decision isn't your choice. Since you don't own the property. People that pirate occasionally and also purchase stuff just as much aren't the problem. But thinking that seeding a file to hundreds of thousands of people is moral is the height of arrogance.
Of course pirate if you want, no-ones going to stop you. But I'm sick and tired of people taking the moral high ground, why can't people just admit they're in the wrong? As I said its arrogance and self-importance. Good for you, you sent a file to a few thousand people, you haven't enriched the culture of the world by doing so. Your self importance is based on living vicariously through greater people.