There are 700+ million people living in Europe. The countries are tiny, most have bunch of official languages. The fix would be to use users selected language and not to flip flop it based on location. IP based location guessing doesn’t work even down to right country in here.
That is not an incentive. There is nothing in to for Google.
It is of course useful for those 700+million, but they are not customers of Google, they users/the product. So long as you won't go elsewhere (in mass) you don't matter.
