For instance I had never heard of Atomic Secured Linux, one of the products of grsecurity's sponsors, but after googling a little bit quite a few companies seem to use it and it looks interesting enough that it's now on my ever growing list of things to test/deploy.
So yes, it seems companies already employ/sponsor Spender, and with the increasing coverage of cyber "threats" seen lately in high traffic news sites, I hope we'll get a welcome focus on security.
As for pushing things in the kernel it seems you missed the animosity between spender and some prominent kernel devs, who (in his opinion) never label bugs as security ones and almost always tend to favor performance over security.
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