When a commercial or corporate photographer markets their photography services, they must remember that a business client is quite different than a retail customer. Even then, business clients are not all the same.
For a retail customer, someone who buys family portraits or wedding photography, the pictures themselves are the final product. But for a commercial customer, the pictures are a business tool, a means towards an end.
With a small business, where the photographer deals directly with the business owner, the customer’s primary need when buying photography services is to increase their sales. But with a large business, the customer’s needs change. Sure, a large company still wants to increase its sales but that’s not the primary motivator when hiring a commercial or corporate photographer.