"If anything, one big mistake we made in our past was to think of the PC (personal computer) as the hub for everything for all time to come. And today, of course, the high volume device is the six-inch phone. I acknowledge that, but to think that that's what the future is for all time to come would be to make the same mistake we made in the past without even having the share position of the past. So that would be madness," Nadella stated in an interview to a news website.

He added that the company has to be on the "hunt for what is the next bend in the curve". "That's what, quite frankly, anyone has to do to be relevant in the future. In our case, we are doing that. We're doing that with our innovation in Windows. We're doing that with features like Continuum. Even the phone, I just don't want to build another phone, a copycat phone operating system, even," Nadella said.

The CEO of Microsoft recalled that when he had joined the company in 1992, the focus and ambition was to take the personal computer in every home and on every desk.