Re: I still don't get why this only appies to MS (@various)
The rules are in place to prevent distortion of the market that harms the consumer.
Apple are not in a position to distort the market so as to harm the consumer. Microsoft were. That's not just a legal technicality — it happened in real life. Microsoft used its desktop monopoly to kill Netscape. Once Netscape was dead it said 'Oh, IE6, that's good enough isn't it?' and more or less walked away. That left us with IE6 for five full years; it wasn't really standards compliant where it tried to be and it included deliberately proprietary technologies but there was no competition. Supporting IE6 for all that time was a significant cost to the industry. Supporting IE6 is still a significant cost for some businesses. So Microsoft very visibly distorted the market. In doing so it harmed the consumer.
Microsoft is hence required to include a browser selection screen to reduce its ability to leverage its desktop share to distort the market for browsers and to create a more competitive market. The more competitive market benefits the consumer.
Conversely, Apple has never distorted the market. If it were to release a barely compliant browser with proprietary standards then people would simply ignore that browser and possibly that device. It doesn't have a hegemony such as to be able to dictate standards for web pages, and it never will.
To be fair to Microsoft, the company has jumped quite enthusiastically aboard the standards train now and I can see no reason to believe they'd repeat the errors of the 1990s. Having a proper, standards-compliant browser engine gives them the target portability they need to compete as the set of target devices becomes more complicated than 'Intel, on the desktop'.