Without socks, the players would get blisters
The NBA players wear Beats by Dr.Dre
Those are actually called "shooting sleeves" and basketball players wear them to help maintain their shooting form.
NBA is sponsored by Adidas so he can not wear them in games but Kevin Durant is sponsored by Nike so he does have his own elite socks. NBA game socks are made by Bare Feet not adidas.
No, and most do not. Many do wear compression shorts however.
Kevin derunt does