The software in your phone is really very old - not obsolete but parts of it have a very long development time and have appeared in many products before they even appeared in a phone.
The problem for the old phone makers is that their software was designed for very inadequate hardware. It was full of clever tricks to make the most of what it was running on but all of this became irrelevant when new chips came out with enough power to run the operating system from a desktop computer. Then all the trade-offs were worthless and the desktop operating systems wiped out the specialist phone ones. So now you're using Linux on an Android phone and Apples' Darwin (also a unix) on an iPhone.
Desktop operating systems were what America was good at and they neatly turned the tables on everyone.
So I personally hope that "someone" is writing general purpose software for aircraft right now that assumes the wonderful hardware that aircraft will have in the future rather than trying to do clever tricks with what can be fitted and powered within current aircraft.
To me it seems like it's risky to hope that one company can do it properly to order because I'm not really sure that an effort that big has ever really been successful entirely by design.