Mergers and acquisitions are tricky propositions. The failure rate for M&As sits at between 70 percent and 90 percent, according to a Harvard Business Review report.

Given the bleak statistical track record of many M&As, perhaps it’s not surprising that recently The Williams Group publicly rejected the $53.1 billion acquisition offer made by Dallas-based Energy Transfer Equity. Currently, ETE is one of the largest and most diversified investment-grade master limited partnerships in the United States. The company owns approximately 71,000 miles of natural gas, natural gas liquids, refined products, and crude oil pipelines.