What's the Business Case for Preventing Litigation?

In Nick Brestoff's book, Preventing Litigation: An Early Warning System to Get Big Value from Big Data (Business Expert Press 2015) (hereinafter Preventing Litigation), he presented his calculation that the average cost per case at $408,000. See Chapter 4 ("What's it worth to prevent a lawsuit?").

The global numbers, for the ten-year period from 2001 through 2010, are as follows:

The “cost” of commercial tort litigation (rounded) is: 

$1.6 Trillion

The number of Federal and State lawsuits (also for 2001-2010) (rounded) is: 

Four Million Lawsuits

These two numbers (reduced by 15 percent and rounded) indicate the Average Litigation “Cost” per lawsuit is (rounded): 

$350,000