Social networks, how do they work?

Question

Computer networks

Tell someone how social networks are arranged, for example, VKontakte, will the development of social networks be relevant in 2016-2025?

Answer 1

how social networks work

Cunning-assed uncles beg money for development from rich uncles.
Schoolchildren are hired for development, taking most of the budget into their pockets.
One fig will not be successful due to competition - therefore, we immediately steal most of the budget.
Yes.

Answer 2

give me a couple million and I'll release a new generation social network *sarcasm not included*. and both Facebook and Apple with its services will go bankrupt. and another era in the information environment will come. ready to take the risk?