RYR.
The OP suggests that his company can afford and want to own their own aircraft. Them buying a card will merely serve to pad someone's logbook (yours?) and thicken Uncle Warren's wallet.
If they really just want to experiment then they can charter once or twice. If they follow the typical pattern of business users their flying hours will increase as they grow to like it bringing them close to that magic figure where ownership makes sense, more so if they place it with a management company and offset costs by chartering out.