I don't understand why websites don't place a button on mobile views that let the user switch to desktop view and vice-versa. That way if you guess wrong at le

I don't understand why websites don't place a button on mobile views that let the user switch to desktop view and vice-versa. That way if you guess wrong at least there is an avenue to get the correct view without messing with window sizes and monitor resolutions. Save the choice and they only have to correct the website once.