Most consumer electronics are way two low value of an item for the type of payment structure. You are talking about. Car are tens of thousands of dollars while an iPhone is less than most car options.
What you want next, shopping around for equity sales options on your iPhone as you would a mortgage?
They're already implementing this stupid structure. If they are going to eventually force us to use this instead of 2 year contracts, they should let me pay off my phone however I want. If I want to put $300 down and pay the rest off monthly, or if I want to put $0 down and pay it off, it shouldn't matter.