Comment by CraigRo

There were a lot of different and kind of weird attempts at this in the industry. The basic problem is that recalculating DAGs and monte-carlo simulations using a ton of floating point math was extremely expensive. Excel was way too slow, C++ required expert programmers and much better organization of programming teams to figure how to coordinate cached intermediate values. MS went with APL, which reduced a lot of the boilerplate and allowed for relatively easy memoization. GS went with SecDB which treated computation as memoized DAGs. Not sure what the others did