That's absurd. I could potentially believe the conclusion that piracy doesn't take away from sales (that is, most people who pirate would otherwise do without, and not buy a copy). But the idea that many/most (or even some significantly-small percentage) of people who pirate will buy copies of the things they like? No, that doesn't pass the sniff test.
I do. When I was poor – I couldn't do it. Now that I'm wealthy and can afford any book, I prefer to take a quick look at online version and then buy a physical copy.
If you and I would support the works we think are good, why wouldn't others? I keep noticing that people constantly expect worse morals from others than how they claim they are themselves
It's easy to add a "me too" onto the existing list but that's not my point. I think we generally can expect better from the average person than we instinctively do. If 50% of people are just as honest as we are (if we're average persons which, on average, we are), that would be easily worth it if free distribution of a book gets you a 3x bigger reach as compared to when people have to pay up front. I'm not aware of research confirming or refuting this (of course I'd like to believe that information can be free), but it doesn't seem so outlandish to me that we can ignore the option altogether by doing a sniff test