Shake Shack burger courtesy goodiesfirst under Creative Commons license.

In this last of a three-part series on McDonald's corporate strategy, Fool contributor Asit Sharma identifies the single biggest threat to McDonald's growth prospects and identifies a potential flaw in the company's strategy that leaves it vulnerable to this threat. 

In the video below, Asit explains why McDonald's approach to its currently stalling growth is not as nuanced as it could be. He also discusses a viable solution going forward. If you're a long-term investor in McDonald's, be sure to also check out parts one and two of this series for an in-depth look at the company's strategic efforts to regain its momentum in the quick-service restaurant industry.