As for Toyota not adopting an aluminum body for their trucks, that's not just Toyota. They're all watching Ford to see if their gamble pays off. Which, with the teething pains they're having currently; may or may not work out in the end (depending on how fast they can correct their obvious issues at hand.)
The fed mileage requirements being phased in by Obama's environmental radicals over the next few years are incredibly harsh. Three years ago, a 4R sized vehicle was required to average 31 mpg combined on the unadjusted EPA treadmill test. Three years from now, it's up to 39. 3 more years and it's up to 44.
Point of reference, the 4R we get now, underpowered and dead throttle and no 4.30s and all rates 29.5. For what a vehicle that scores 44 looks like, see a Nissan Juke.
It's not a matter of Ford gambling while conservative Toyota waits to see how the early adopters fare, none of them have any choice in the matter and what shows up to market first just reflects where in the product cycle they happened to be when the market was upended on them. The pipeline is all aluminum, all small displacement powertrains with Atkins, DI, boost, the other tricks. Nearly everything will be a hybrid.
And how much more they'll cost to buy and fix is our problem.