That's how the horses on Chincoteague Island in Virginia are treated. There are mostly left alone, so have no fear of humans, and it is possible to interact with them.

I wish we treated ALL our wild horses that way. Over 80% of those polled want the round ups to stop, and for the horses to be left alone, but the BLM isn't about to let go of a money maker, particularly one that fills its coffers on a regular basis. Sigh.

Of course, I've known people who are good with horses who have been able to interact with the western mustangs, but they are much more skittish, and a great deal more patience is required.