I have used licensed fabrics, but I have the customer buy the fabric for their use...then they can hire me to assemble the item(s). The main reason for the disclaimer is to keep us from buying 30 bolts, making items to sell commercially, for a huge profit. They want control over what's made with their logo/fabric. My hubby's aunt used to make Budweiser fabric tops, bikinis, shorts, purses, etc.. She wrote and got permission. I think she had to submit the items to get approval. So, really it's not to keep us from using the fabrics, it's to control the type of items and quality of the end product.
If you want to use a licensed product, just make one...write to the company and get permission.