Earlier quoted context omitted.
He ruined the lives of many hard-working software developers who relied on selling their code to feed their families. This was back when programming was a highly skilled and difficult job that only a few could do, so cracking was even more harshly targeting people.
More like telling the whole world "you're not allowed to copy this, because I wrote it" and threatening everyone with imprisonment or fines if you do. So everyone has to buy it through him, or else. To feed his family. That is what copyright law fundamentally is. We all learn from other people, just because I came up with an idea, I cannot tell other people "you're not allowed to use it". It violates other peoples na…
You're right, ideas are not protected by copyright.
Copyright only protects original works of authorship.