I can remember one well, but it's not really pertinent to this subject. Just an example of failed leadership in a corporation. No intel on the specific leadership styles which were used, just a general synopsis of how the leadership in the organization resulted in a significant failure for lack of research. (WalMart's pull from Germany)OK, but remember that if you're throwing it out as fact, I'll be looking for something more than just YOUR conclusions.
If you're looking for hard evidence which specifically correlates a person's immediate leadership style to the success or failure of the entirety of the business it'll be difficult. Namely because typical executives in this sense pass the buck of blame and are relatively unwilling to admit to their own faults. Which demographically speaking would hold true to that category of leadership style (totalitarian.) It's never their fault. Yet, companies or departments always seem to go downhill upon their entry.
Although, if you wanted immediate response a simple google search will validate what I've said. After about 5 minutes of skimming half a dozen articles they all articulate what I've been saying. Adhering to a single leadership style, particularly a controlling/commanding one does not last long or provide for success for the person or the team. It demotivates employees, demoralizes them, etc. This then leads to high turnover rates and/or loss of production. Leaving your workforce with the bottom of the talent barrel which doesn't lead to more efficiency.
Now if you're misunderstanding what I'm describing than obviously there will be a discrepancy there or if I've misrepresented my point, but otherwise everything I've been able to view in the last few minutes substantiates my presented perspective.