I wonder if browser engines are a strategic asset? [Gestures at IE vs Netscape] [Gestures at Chromebooks which 99% of population never run Edge or Firefox on]

I wonder if browser engines are a strategic asset? [Gestures at IE vs Netscape] [Gestures at Chromebooks which 99% of population never run Edge or Firefox on] (Yes, "the fight" is between Google and Apple now, but still...)