They are quite expensive, it would be good to be able to land them too.
Dont forget "Erlang Programming" http://oreilly.com/catalog/9780596518189/. Its been out for a while
The plumbing is not the problem here. It is the Quant models that _are_ the market in many cases (certainly where ever hedge funds are significant players).
What is tightly regulated? Half the Quant algo trading models get thought up in the evening, coded overnight and activated in the market the next morning.
If you try and slow them down they just run to the head of the desk bleating that the "nasty IT man stopped me making $1000,000,000 for the bank with his silly QA nonsense" and whoosh, its in production. It is prop trading so its their risk.
Among claims of VR environments running on "100 of millions of servers" Jaron Lanier made the prediction that: "In 25 years, robotics will be so good, we'll have no more manufacturing jobs. Software will be so good, there will be no more consulting jobs. But we will all get rich buying and selling virtual goods."
He had me going for a moment, but then "no more consulting jobs"? Yeah, right."