I work on this system and as it says in the article you quoted, they are not actually "replacing" traditional radar. We still very much use Radar but the GPS-like system (it is not the same as the GPS in your car) allows us to position planes even closer to each other to allow more planes to share the same amount of space.

In addition, the current plans (including about the next 10 years) are all about making the current human air traffic controllers more efficient and reliable and the systems are all still based around human interactions which I really don't see changing anytime soon.

It benefits the country because a part all of that money spent on MS products goes towards the GDP and taxes. Although Red Hat is based in the US, they don't make the kind of profits that MS does and thus don't contribute to the economy as much.

Zero day attack, exploitation of unpatched software vulnerabilities

You are all looking at it the wrong way. Think of the all those children who are having picture books read aloud by their kindergarten teachers! They are having a society of piracy ingrained at such a young age! We must arrest all the teachers immediately for the sake of the children.