Cost analysis not feasable
If everything had a cost analysis before it was done, there would be a lot of things that wouldn't be invented now.
The laser was invented without knowing any benefit from it.
The CSIRO's work on astronomy led to WIFI being invented and licensed, which is now worth (from memory) $300 million a year to Australia. I could go on, but you get my point.
You cannot do cost benefit on innovation that hasn't been invented yet, or even throught of.
Its like trying to do a cost benefit of "the internet" during the 1960's.