This is a very limited right to use an excerpt of copyrighted work to illustrate or as an example in educational or political discussion. You don't expect to get your office space for free. I'm sure you wouldn't go in to a shopping mall and simple walk out with items and not pay. Copyright laws apply to everyone, no exceptions are made based on income, profits, tax status, or other financial criteria. In part because many promise photographers large royalties but usually end up paying them very little.
Photographers are often suckers when it comes to business.
Most do not grant full unlimited rights. Many restrictions may apply. Also keep in mind that the images on these disks are often lower resolution and used by perhaps thousands of companies. I don't think you would be too happy to see your competitor using the same image. Or worse yet, an ironically unflattering company.