But in this case, and in the context of the OP, it was Davis's oversight and possibly tangible sacrifices (I don't know the details of his career) that made it possible.
Each time we use some numerical methods and it Just Works, we should mumble a tiny prayer of thanks to folks like these, and the writers of BLAS, LAPACK, ARPACK, and many others that provide the backbone of an incredible amount of work.
Prof Doug Lea at Oswego is another unsung hero who has done a ton for programming and particularly parallel programming. A big chunk of java's std library is copyright Josh Bloch and Doug Lea. In particular, Prof Lea built jsr166.
His personal payout would be very tiny (if any at all), after U of F's take and money his lab gets. But at least its some funding to keep his lab going.