I think that it is easy to confuse worth in terms of cultural value, historical value, and monetary value. Is Instagram worth more monetarily? Yes, in the realm of advertising, Instagrams user base is right smack in the center of the target demographic sought by many advertisers; the 12-30 crowds.
Historically and culturally speaking, I believe that the NYT offers far greater value. But, who wants to spend $1B on historical value?