At our home that we rent, we have down duvets with duvet covers and down pillows. We've never had a management company wash the duvet covers after every guest. I wouldn't want them to because I'd have to replace them too often. Not to mention the fact that the duvet covers go with the decor in the room. So if I had to buy new ones frequently, I'd probably have to do some redecorating as well.
Once we had a germaphobe as a renter. She washed every duvet, duvet cover, pillow, and sham in the house, then draped them over the fence around the pool area to dry. We do have an electric dryer. The owners of the house next door happened to be in town and told her that it was against the neighborhood covenants to hang linens and towels outside (that's actually posted on the refrigerator). She refused to remove them. Four of the shams blew away, and she didn't bother to hunt them down. I loved the pattern on the fabrics, but they were discontinued, so I had to buy solid-colored shams.
I really don't want renters to wash my bed linens because they are expensive, and I'd rather have them professionally cleaned.
If the cleaning service had to dry clean all of the bed linens after every guest, I'd need two sets. That would be very expensive.