What I got from this is that Apple actually copies (or steals) the designs of Braun quite a bit. In fact it looks like they go out of their way to make similar designs to those of Braun.
I don't understand how a company who does that so often, is so aggressive towards others that do the same thing to them.
Saying Apple "steals from" Braun is too strong. (Xerox has a much stronger claim to having been ripped off by Steve Jobs than Braun does.) But it's undeniable that the Jobs/Ive design aesthetic was strongly influenced by the work of Dieter Rams. That's not unusual, though; anyone who works in a creative field (including programming) will know the work of another can inspire you to new directions in your own work.
I don't understand how a company who does that so often, is so aggressive towards others that do the same thing to them.