There’s no reason to be confrontational here; I’m wondering why we refer to some people by their first name rather than they last name. The most obvious reason is when there’s already a famous <last_name> (e.g. "Hillary" vs. "Clinton"), or if you know that person personnally. Wikipedia refers to both Marissa M_a_yer and Larry Page (and everybody) with their last name. Do you have some examples of e.g. press articles where Brin or Page are referred to by their first name?

That’s right; thanks!