"the majority of those who trade stocks are still very emotional"
Not true. The major owners in Apple, as any major company on the stock market, are mutual funds and institutional holders with 72% of the stocks. Maybe the majority of the small time investors are emotional, I don't know, but that is a completely different thing since they can only affect the stock price so much.
Apple controls all part of the iPhone except the mobile data connectivity. Connectivity is expensive and everytime Apple wants to include mobile connectivity they must start negotiating with the mobile operators. In the end, how well AT&T are doing at managing their network affects what price tag Apple can put on the iPhone or iPad. With $40 bn in cash, would it make sense for Apple to buy a mobile operator?"
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Also important to understand is that the lower the transmitting frequency, the further the signal will go (given the same transmitter strength). Going from 1 Ghz to 500 Mhz and you double the transmission range without increasing the transmitter strength.
To make this equation even more difficult, the lower the transmitting frequency, the higher noise level. So in conclusion this means that more bandwidth gives us higher transmission speeds and higher frequnecy gets more expensive since we need more transmitting towers but has low noise levels and therefore acheives higher speeds.
Hope this explains things!