I guessed since they weren't dualies........

They had this same (or a very similar) issue with the 6R80 in the 12th Gen where it would unexpectedly downshift to 1st at highway speeds. The recall solution (which was done to my ‘13) was to alter the programming so it wouldn’t do that. As I recall, the problem was a momentary loss in communication with a sensor related to how the truck knew what speed it was going, so the truck would think it was stopped or moving slowly, and would shift to 1st to deal with that. That’s ok if you’re actually stopped, but no es bueno when you’re doing 65.   The solution was to get the PCM to ignore the momentary drop-out, and boom (or, really, no boom), problem solved. 

Thanks my friend, but the list ain't my creation, it comes from an fleet management journal. Maybe the big shots at M-tex didn't get their data submitted to the journal on time. 😄

I thought they were F-350's........

I must admit the interior of the new sienna is hot

You forgot M-tex in Midland Texas.  They have a shitload of F250s.........

If ads are so important then how did Ford sell 1.5M vehicles last year without them?  Lack of ads doesn't make them any less of a commercial success.   Some buyers are brand loyal like my brother in law who only buys F350s for 7 crews and himself.   Others just want the best price.  For most of them this is not their first or truck and they know what they want or don't want.  

Yea, that's the Ford MO. And you are right that value for the consumer is nonexistent in this case.   The Ford big shots who thought of this strategy are pretty dang clever. De-content to reduce costs, sell accessories/aftermarket parts that fix the de-contenting (from the consumer's perspective) to increase revenue. They're probably gettin' a nice bonus this year!

Here's the breakdown for the 10 largest commercial vehicle fleets in the U.S.    

Well again, my contention is most class 7 and lower sales are to the people you describe-small business trade people/contractors.  Do the Verizons, Comcasts, (7M3's employer) of the world place large orders for class 4/5 trucks?  Yes but I'm talking about the thousands of businesses in this country that buy these lower classes in support of their business.    I have to say, the only large fleet orders I see for class 6 and 7 Fords are UPS and Enterprise Rentals.