I totally agree with this. I believe it is dead-on accurate. Ford wants to have the best selling pickup in the United States and doesn't want its own models to detract from that, no matter what people really want; and Ford can save money to boot by only offering full size pickups. Just like Henry Ford did with the Model T; you can have a pickup in any size you want, as long as it's fullsize.
i think something much more important than the best selling pickup in the united states, would be the best selling brand world wide...
the f-series is the "best selling vehicle in the united states for 24 years" and the "best selling truck in the united states for 34 years"
it also has titles for north america, and worldwide sales, though i can't quote them as i don't know the number of years... the f-150 has been credited with half of ford's total income in the last few years.
the f-150 has earned it's keep, lets make another model famous! ford owns the fullsize market in north america, here in canada ford owns the market for full size trucks also... and i think toyota owns the midsize market...