[atonse]

T. Gondii is known to reduce inhibitions. And business, entrepreneurship, sales, etc are all about reducing inhibitions.

Not saying this is a slam dunk correlation, but maybe it isn't so far from left field to have studied this link.

[seren]

That would be weird if T. Gondii actually helped to fuel civilization development because of having more risk takers (and maybe more prophets as well). So not really a parasite, but a symbiote for humanity as a whole.