The US does make some cabover trucks. For the Army, naturally. https://en.wikipedia.org/wiki/Family_of_Medium_Tactical_Vehi...
> Oshkosh Corporation (current; won rebuy competition)
and that's part of the private equity consolidation of emergency vehicle manufacturers from another comment [1] in this post. Perhaps that means there could be more compact, maneuverable, cabover designs of commercial fire trucks!