What would be Apple's punishment? A fine? That's hardly going to deter the world's most valuable company. What they did hurt their competitors. The punishment is that they now have to help their competitors regain what they lost. This is not unprecedented by any means. In the two cases where Microsoft was deemed to have an illegal monopoly, they had to give their competitors access to their proprietary APIs (US v Microsoft, a gift to Apple and Linux vendors) and include downloads to competing browsers (EU vs Microsoft, a gift to Google, Mozilla, and Opera).