I think of a companies like a sailing boat.
Accounting and finance are the hull that needs to be strong enough to keep you afloat, the rudder and keel are your market and strategic positioning — these need to keep you firmly in place, but agile enough to quickly maneuver choppy waters. Your mainsail is your sales and marketing, which needs to be cast tall and wide to catch as much wind as possible to keep you moving forward.
The captain of the boat needs to have the dexterity to keep the boat and the crew ship shape to make the voyage as successful as possible.