This opinion may be controversial to many, but it is what a lot of people are thinking. They experiment, which is phenomenal. But none of those experiments have been a major hit.
Apple has flagship products like the iPhone, etc. Google has search, Android, and even Youtube at the center of its existence. A fallback option, if you please.
Mircosoft "somewhat" has Windows, but hasn't really nailed it yet. These "experiments" will not bring back the glory days.