I've tried, but not been successful at making a Dunlop rim look new again. With the right tools and experience it may be possible, but as Knut says, probably not worth the effort and cost for one rim. The rims are thin and on the soft side, but it would take a serious lack of experience to flatten part of the lip installing a tire with a 12-inch tire iron. You would probably need at least two 16-inch tire irons, and not have a clue how to install tires. Tires go on those chrome rims relatively easily with tire irons if using a little liquid soap. What the young guys are not accustomed to working with are narrow rims, which are harder to put tires on than wider rims. Regardless, service shops generally don't take responsibility for damage. "Sir, that rim came in that way."
I thought backyard mechanics and old dirt bikers were the only ones using tire irons anymore. Don't most shops selling motorcycle tires have pneumatic tire installation equipment, and balancing machines?
When I had a garage full of bikes, I installed the tires and took the rim with tire on to the local dealer to get balanced only. However, I have trust issues, and prefer to wreck my own stuff. I still install my tires, but only have the one bike anymore. The day I can't install a motorcycle tire is when I quit riding a motorcycle. Same goes for kick starting one.