But there's also the clueless politician that says "just give me what I want regardless" and feel because they were elected into power, they should be able to call the shots. They end up causing more problems than they fix, if they fix any at all.
Dollar figures are arbitrary. If people think a book should cost $15, that's what they'll pay. If they think it should cost $10, or $5, or $2, they'll never pay much more than that. There is no real dollar figure that book should cost - just what is perceived as the norm. The publishers were illegally colluding to raise the norm from what Amazon thought the norm should be.