I'm saying that if we want a more diverse workforce, we need to address more than just hiring practices. But yes, companies might need external incentives at the moment to prevent it from being a disadvantage.

So you're saying that the perceived "competitive advantage of diversity" is only an empty slogan, and diversity is actually a disadvantage in the real world?

I'm saying that it might not always weigh up against the disadvantage the diverse workforce have accrued over the years, and that that will likely remain the case unless we're doing something about that. (Which is often being done.)

And hence, that some sort of external motivation may be needed to make it weigh up against that at present, which would eventually lead to it simply being a competitive advantage.