What's holding equipment manufacturers from going into multicore, RTOS-based equipment? What's holding equipment manufacturers from going into multicore, RTOS- based equipment?

Recently, Rockwell Collins certified its display systems based on RTOS:


Lynx Software Technologies, LynxOS-178 RTOS Deployed by Rockwell Collins in Pro Line Fusion Series of Flight Deck Systems, November 27, 2012.


Why are major players not moving into these segments like RTOS, multicore processor? Is it because of certification difficulties?
Development costs, complexity and need.

On a system that has to be hard real time multi-core is a pain(think expensive) and most things that need to be hard real time are not that complex. Things that don't need to be hard real time don't need to be RTOS, so you have one system that handles all the hard real time stuff and one that runs Linux and handles the other stuff.