I think you need to make a case for DEI being “one of the industry’s greatest strengths”. It’s not obvious to me.
It’s easy to make an objective case for how ‘D’ is a strength, however E and I are imo more values which intend to attract diversity.
If your product is used bya cross-section of society, then having a cross-section of society build it should lead to a better product no?
McKinsey has studied this extensively had has repeatedly found that diversity is financially beneficial to companies. They've had at least 4 reports on the subject.
https://www.mckinsey.com/featured-insights/diversity-and-inc...
Landing page:
https://www.mckinsey.com/featured-insights/diversity-and-inc...
It's obvious why this is the case if you sit down and think about it. Echo chambers of like-minded individuals can't understand customers as well as a workforce of people who represent the diversity of those customers.
This isn't just diversity of race or gender, it's also diversity of thought and background.
Also critical and under-emphasized: the E and I in DEI, equity and inclusion. Power distance and lack of inclusion can railroad companies into giving the people with the most power the most influence on decisions, rather than giving the best ideas a chance to breathe.
In business a classic example might be "men designing women's clothing." How are you going to understand your customers if none of your employees and leadership resemble those customers? Perhaps you can figure it out and make some decent products but your competitor who has more diversity in their workforce is likely to outperform you, which is exactly what McKinsey's studies have demonstrated.
I will also point out that the only reason anyone started questioning this obviously true business concept and changing opinions into being against DEI is because the Republican Party's strategists figured out that they could appropriate and leverage the term "DEI" and attach it to the latent reactionary racism that much of the US still holds dear.
You can get away with saying "I don't like DEI" in public but if you say "I don't like black people" or "I don't think women should get hired for important roles" [1] that is obviously not acceptable, even though a large percentage of Americans feel that way. Right wing media twisted a largely innocent term into a useful dogwhistle.
[1] https://journals.sagepub.com/doi/10.1177/1532673X251369844
How well would the tech industry do if they fired all the autistic people for "not being team players"? How many dev teams are there without at least one furry, trans person, or socially awkward geek?