Yes, and it's illegal. Having a monopoly isn't illegal. Anyway, your statement is completely unrelated to the subject of whether these companies would be innovating more if the market was less consolidated and I don't believe so.
Some kinds of monopoly are illegal. That first case was an antitrust case which has some connection to anti-monopoly, yeah?
Those companies have had a decade at the top with all the money and talent in the world. Has tech gotten that much better since 2007? Has Apple's hardware gotten better relative to the competition? Has your web experience gotten remarkably better? Do we prefer Allo or Hangouts or x, y, or z to Google Talk?
With the clout they have you have to innovate some and they certainly have. The question is whether they have innovated substantially. It doesn't seem like it.
In 2006 the linux desktop was about the same as it is now, the Windows one was better. In 2006 I didn't have a smartphone yet. And in 2016, I don't have one any more.
(Actually I have one from work, but I only seem to use it as a wireless hotspot.)
But XP was very good for its time -- it brought in the big menus and (quasi?) full-screen stuff which later metastasied in Win 10. Though those menus were also a throwback to the good old DOS text-mode menu systems.
Win7 was of course another good one, a few years later. But note: the difference between Win7 and Vista was not the UI design -- it was the performance and other aspects of technical execution.
