Ask HN: Is there any reason not to be able to run iOS4 on 1st-gen iPhones/iPods?

The 1st-gen and 2nd-gen iPhone and iPod Touch share the same processor (an ARM11) clocked the same (412 MHz) with the same amount of memory (128 MB). The only difference between the original and 3G is the 3G-capable radio. The only difference between the original iPod Touch and the 2nd-gen one is the addition of a Bluetooth radio.

While I would completely understand if iOS4 didn't support the 3G but ran fine on the 3GS, I cannot imagine anything other than pure unadulterated greed as the reason for it to run on 3G and not on the original.

Anyone wants to offer a clue?