Update, next day, 7 pm:
This wasn’t a very good post – it made a weak case for the business value of diversity, relying on too much that was personal. Instead I should I have linked to articles from serious business sources like Forbes, Enriching The Data: Driving Business Value With Diversity And Inclusion, ABA, Dollars and Cents: The Business Value of Diversity and Inclusion, and McKinsey and Company, Why diversity matters. They study this subject and have said it better than I can.
--OK. Here's a Thomas Sowell quote I just came across. It's very typical of his arrogance and preachiness, and also short-sightedness.
How many man-hours are wasted at this kind of thing, Mr Sowell? You're a fool if you think it's zero.
Another time I worked for a company, MCI, which was at the time the second-largest long-distance company in the US (this was ~ 1993). I was assigned to a project to build an toll-free 800 service that worked in both the US and Canada and across the border, one number that covered both countries. Not as easy as you might think. Our US team worked a lot with a team from Bell Canada, but there was always this quirk that all our documents needed to be translated into French to satisfy the Quebecois of French Canada. At first it seemed like an unnecessary chore (MCI was all about cutting corners and moving very fast), but eventually I came to respect the Canadian's inclusivity, tenderness and respect for other parts of the country that were a little different -- the south for the west, New England for the midwest. We'd all be better off for it, and better for seeing that everyone's views were included.
So, yeah, I do think diversity matters, and I do think companies recognize this these days, even if Thomas Sowell in his ivory tower doesn't.