Could capitalistic ambition be driven by a feline-borne parasite?

No. Almost definitely not. Human personality is a broad spectrum, and there will always be those willing to do whatever it takes. However, the hypothesis positing a parasite-based alternative is fun to consider. It's speculated (one person has speculated it) that the 'alpha dog' business mentality may be a side effect of Toxoplasma gondii, a parasitic microorganism that spreads through any number of varied animal hosts and influences their behavior in odd but ultimately self-serving ways. — Read the rest