There is certainly a professional market. Who do you think is buying most medium format digital? It always was that pros bought most new medium format SLR's, and that has not changed.
It takes more skill and savvy than ever to do well, as outlets like stock are so much less lucrative. It takes as much lighting skill as it ever did to make a product look good, and it takes more creativity than ever to make an image stand out. Companies are not entrusting the image of their product or company to someone with a cellphone camera, or someone who just got a DSLR and is claiming to be a pro.