If they're not buying any product or technology, I don't understand why a company would pay more than zero. If it's common for companies to pay "$X million per engineer" to simply acquire people, then from the employees' point of view, why even job hunt the traditional way? Wouldn't it make more sense to get a few engineering buddies together, form a 2-3 member LLC, and shop around for an acqui-hire? You'd get jobs AND million-dollar "signing bonuss".