Actually, that has been part of the coffee-shop value proposition as long as there have been coffee shops. It's why they have seats in the first place. They're selling comfort as well as coffee. Obviously those seats are supposed to be for those who have purchased something, but within that context the social-connection role has been part of the equation for far longer than the WiFi-connection role.
"I somehow doubt this."
Doubt and rationalize all you want. It won't change the facts.