"Try "how old is william shakespeare"..."
"the sites that used to create such data..."
Surely William Shakespeare's Mother created that data?
The website that displays it has taken that data from somewhere else - it is a collection of facts, so they only have unoriginal content. The thing with facts is that they don't belong to anyone, hence there is no copyright surrounding them (with some exceptions).
As Google take most of their facts from Wikipedia, who don't mind them using them for their knowledge engine then I don't see the problem. If someone wants to search for a "fact" then that is exactly what they want (hopefully from a reliable source). The user wasn't looking for a large number of sites which host that fact. If you were looking for the life story of W. Shakespeare or an original article examining the controversy of his works then Google would not show you that directly, it would deliver page results that might.