Tangentially, I thought Clayton Christensen makes a compelling argument that this type of analysis—focusing on IRR and returns on equity—creates an overabundanc

Tangentially, I thought Clayton Christensen makes a compelling argument that this type of analysis—focusing on IRR and returns on equity—creates an overabundance of "efficiency innovations" that liberate capital but don't really push things forward. Perhaps the wave of acquisitions is tamping down our ability to produce longer-term, "empowering innovations." (http://www.nytimes.com/2012/11/04/business/a-capitalists-dilemma-whoever-becomes-president.html?pagewanted=all&_r=0 http://www.nytimes.com/2012/11/04/business/a-capitalists-dil...)