Not yet. But expect their grip on that product to lessen with time. Just as I expect Apple to move past the IPhone. Even the biggest most capitalized players can't sit on their laurels forever. I don't think the market, let alone technology will stand for it.
Windows is so entrenched in technology, development, business, education, and home computing, it will take something special to shift everyone from it.
Microsoft has the PC OS market cornered that literally no one has been able to make a dent outside of Apple.
OS X only holds ~6% of the PC OS market with Linux at 1% or less (if the analytics are correct)
Apple is far more diversified than Microsoft, though Apple has been getting a lot of hell for moving too far away from Mac, iPod and iTunes.
Samsung is far more dependent on Android than Apple is on iPhone/iOS
Google is far more dependent on Android than Apple is on iOS
Though Samsung is expected to fully move away from Android next year to their own mobile OS Tizen (which has been gradually rolling out on other products).
If Samsung succeeds at ditching Android, Google can kiss half of the mobile market good bye over night (Samsung is the biggest cell phone and tablet producer worldwide)
Until Processors, GPUs, APUs, and batteries finally all see a massive next generation breakthrough, we won't see another huge technology paradigm like Smartphones for a long while.
Intel, ARM, and AMD are stuck unable to do a massive next gen advancement in CPUs
AMD, Nvidia, and others are unable to force the next generation breakthrough in GPUs and APUs
RAM technology is stuck running on 40 year old technology, with no end in sight.
The world is literally stuck using 40 year old battery technology and we aren't any closer in solving the physics issues with next gen batteries than we were in 1980.
So yeah technology progression is slowing down (Despite what some say) for the next decade or so unless a massive breakthrough occurs in one of the above technologies.
Anything can happen, but don't expect anything for a long while on that scale.