think of this,
someone get a lease truck and follows the FROCI,
thats a change every 16k miles,
at 48K miles its had 3 oil changes.
Would you want a truck with a service history like that?
I certainly wouldnt,
working in a shop its easy to see the many problems created from long oil change intervals,
VS the cars that get frequent servicing.
usually oil issues effect the valve train components first,
followed by the engine seals and then crank and rod bearings.
Like I said oil is cheap compared to replacing all 4 cam phasers and timing chain and guide system.