Well, they had a dominating browser for many years, so they know the benefit. Apparently they decided it is cheaper to just focus on the "user experience".
Now they can still control what buttons there are and whatbis shown on the home screen by default, but do not have to bother so much with all the expensive technical details.
Now they can still control what buttons there are and whatbis shown on the home screen by default, but do not have to bother so much with all the expensive technical details.