The reason no legislator won't take Apple on is because they don't have significant market power. The Mac, iPhone, iPod etc have shares but nothing like the penetration that MS have with Windows. Macs don't account for even 10% of the market and the iPhone has less than 25% of the smartphone market let alone the mobile market.

I think it suits Apple to keep prices high delivering high margins with no possibility of market share issues. It's a concept that has won favour in many sectors with BMW for example preferring a large slice of the premium car market and not taking on Toyota or Ford for volume business. Exclusivity often delivers a premium.