The vast majority of piracy is a necessity for the majority of the world's population. In most parts of the world a student cannot even afford half of the textbooks he needs and certainly cannot afford to buy video games for 60 USD each. Modern economy spends billions on advertising to create artificial demands, so it is not suprising that people who cannot afford all these shiny things copy them if they have the opportunity.
When I was a poor student many years ago (in the 90s), I pirated everything, every productivity software and every game I wanted to play for the simple reason that I could not possibly have afforded them. I had difficulties to make ends meet at the end of each month, often couldn't pay my phone bill and often had to 're-shuffle' credits to keep heating and warm water. It would have been outright crazy to buy, say, a copy of Adobe photoshop or protools for my hobbies or even for professional education, I would have literally had to starve in order to afford any such software.
Now that I have a reasonable income I almost never pirate and buy the stuff, if that's possible. (There are surprisingly many things you cannot buy in smaller countries, affordable streaming of TV series being on top of the list.) Sure there are also some people who copy content even though they could buy it, but I'm pretty sure these are a minority. Many companies deliberately do not make the correct calculations, though, they don't ask "How much does all the software this guy puts on his computer cost in total, including all upgrades?", they instead whine that "this guy could have bought our product X but instead pirated it" ignoring the fact that if you'd add up all the stuff people want because of their ads or really need, you'd end up with an astronomical bill in comparison to which hardware costs would be neglectable. Thank good we have gratis open source software now, so it is indeed possible to go without pirating nowadays unless you're in a specific field like graphics or audio engineering where it still hard to do everything with gratis software in a competitive way that you can also put on your CV.