Harbir Singh of the Wharton School discussed the difficulties of corporate alliances in and beyond the auto industry. He attributed the low success rate to companies overestimating their savings and underestimating the challenges of merging businesses.
https://www.wsj.com/articles/nissan-renault-scandal-shows-its-hard-to-keep-car-alliances-on-track-11544529603 The Wall Street Journal