The reverse is true as well. A company with no focus on social interaction drives away people that enjoy socializing with their work mates. For them it makes the office seem like a cold and uninviting place and they’re more likely to take that job offer from a friend. I agree that everyone needs friends outside of work and that you shouldn’t be really close friends with people at work since it can lead to complications but there are benefits to being able to chat with the people at work about non-work related things and to let your hair down a little.