Not only does Steve Jobs compare iOS devices to cars (and PCs to trucks), so does Jailbreaker extrodinaire and Cydia developer Jay Freeman (Saurik) in his Ted Talk:
Even more from Saurik on Hacker News:
“Apple Doesn’t Actually Deny Much From Their App Store”
Seriously: Apple doesn’t actually deny much from their App Store. They are occasionally a little anti-competitive, and that sucks, but these really boil down to a handful of high-profile cases: the effect on the market is minimal. Most of what they deny either a) doesn’t work or b) is illegal or morally objectionable to your average American.
So please… PLEASE… I implore you: drop the battle to get Apple to open up their App Store(s). Instead, work on getting Apple to open up their device.