It is also not something you get when you attempt to recruit people from the same sources and socio-cultural milieus with the same acceptance criteria, but of different genders and ethnicities. Hiring an ethnically diverse range of, eg, MIT/CMU/Stanford graduates does not engender diverse viewpoints.
"If you want the best people working at your company, you should want a group with similar demographics as the customer population". Huh. So, if most of my sales of akvavit are to expat Finns, I should certainly not hire a German to do my security audits. And if most of my sales of peat-optimized spades are to the Irish market, I should certainly not contract out the manufacturing to the great industrial base of Shenzhen. This seems rather insensible and possibly bigoted to me.