Boeing has for a long time avoided making things without wings such as avionics suites or even engines. The later mention of engines is far from a Boeing thought cycle but it has an eye for other stuff that Rockwell Collins and and Honeywell International may supply. A bold step is adding on other things to a portfolio when making high tech things like airplanes. Boeing makes military, space and other X projects too. It isn't hard to imagine them making avionics for example for its own aircraft and for others.
The manufacturer has a think tank exploring all kinds of ways it could add value to its product line. If it could make its own flight controls, or make engines then Boeing would add value to every aircraft it sells.