Agreed. That's part of an entire philosophy, and is a part of what you take into account when you decide whether or not you prefer to help people who like to help themselves (the developers they currently have); or you would prefer to help those who need lots of hand-holding (the consumers they are trying to attract). I've tried to say all along, that this is a part of the basic decision here.
Yes. Another interesting case occurred with an outliner programme called Ready!. Just to see what happened, the makers made the Mac version copy-protected, but did not copy-protect the Windows version. The Windows version was of course soon pirated and copied from one friend to another. The Mac version could not be. They were appalled at how extensive the copying was. When they made the subsequent programme, they did their best to protect it. Eventually a version called GrandView was released which was a really great programme that I still use. Symantec eventually eventually bought it -- and -- decided to kill it off altogether.