i-adjective
aggressively business-minded; shrewd (of a merchant, salesman, etc.)
Describes a person who is relentlessly focused on profit and business opportunities, often with a connotation of cunning or sharp dealing. Typically used of merchants, salespeople, or entrepreneurs.
彼は商魂たくましい営業マンだ。
He is a shrewd salesman with an aggressive business instinct.
あの社長は商魂たくましく、どんな小さなチャンスも逃さない。
That company president is aggressively business-minded and never misses even the smallest opportunity.
Compound of 商魂 (しょうこん, 'commercial spirit') and たくましい ('robust, bold'). The exact historical derivation is uncertain, but the phrase is a set expression describing a strong, profit-driven business mentality.