Professional photography is a useful service because most people do not own very powerful cameras or labs to manipulate photos. Even more specialized is the use of strong lighting and studio conditions to create optimal photographs of subjects. An amateur can create a decent photograph. A studio photographer can create exceptional images that are fit for advertisements and magazines. If a business needs a subject photographed onsite, then consider renting a mobile studio photography service.
A photograph studio does not need to take a lot of space, but it does require a controlled environment and multidirectional lighting. The point is to not have to depend on fluctuating sunlight or some other light source that might not produce optimal results. Modern cameras can process dim images more efficiently, but having optimal lighting conditions can still render a much better image. Have a studio on your business site if you need it.