No, you're mistaking the point about pragmatists. It's not necessary for every pragmatist to adopt it for every project in order to succeed, just a critical mass of them.
In Rust's case, enough large, medium and small companies have adopted it that it continue to be a thing a decade from now. Google alone has a large vested interest in ensuring the continued development and ecosystem health of Rust, because it uses it for critical components in Android. Android isn't going away, nor will they rewrite their Bluetooth stack (https://android.googlesource.com/platform/packages/modules/B...) and Binder (WIP - https://lore.kernel.org/rust-for-linux/20231101-rust-binder-...) again in some other language. Now extend the same argument to the projects within AWS, Microsoft, Meta and others that depend on Rust and can't rewrite their Rust projects without a massive investment.
The point isn't that all new code at the pragmatists must be written in the new language. A few critical projects are, adoption within the pragmatists continues to grow with time. This allows a new company thinking of adopting Rust to easily answer the question - "Will it be around in 10 years? Will the ecosystem still be thriving? Will it be easy to hire for this?" It's a likely "yes" to all 3, because so many pragmatists are invested in making it so (https://foundation.rust-lang.org/static/publications/annual-... - See "Member Overview"). All of these companies are literally paying tens or hundreds of thousands per year to help the ecosystem flourish.
But maybe there is a different data set that shows early adopters adopting D. But for me, I would say a language has been adopted by early adopters when it reaches 1% of all developers in a reasonably large survey. Given that, it's entirely fair for a company making a language decision now to ask if D will still be around in 10 years.
In Rust's case, enough large, medium and small companies have adopted it that it continue to be a thing a decade from now. Google alone has a large vested interest in ensuring the continued development and ecosystem health of Rust, because it uses it for critical components in Android. Android isn't going away, nor will they rewrite their Bluetooth stack (https://android.googlesource.com/platform/packages/modules/B...) and Binder (WIP - https://lore.kernel.org/rust-for-linux/20231101-rust-binder-...) again in some other language. Now extend the same argument to the projects within AWS, Microsoft, Meta and others that depend on Rust and can't rewrite their Rust projects without a massive investment.
The point isn't that all new code at the pragmatists must be written in the new language. A few critical projects are, adoption within the pragmatists continues to grow with time. This allows a new company thinking of adopting Rust to easily answer the question - "Will it be around in 10 years? Will the ecosystem still be thriving? Will it be easy to hire for this?" It's a likely "yes" to all 3, because so many pragmatists are invested in making it so (https://foundation.rust-lang.org/static/publications/annual-... - See "Member Overview"). All of these companies are literally paying tens or hundreds of thousands per year to help the ecosystem flourish.