Canned hunts have their place. Fringe ranges where pheasants may not do well in the wild, training dogs, corporate type occasions, getting new/youth hunters on birds. I'm all for it. I used to work at a club in high school, from guiding with my dogs, to doing all the other fun stuff like standing inside a large netted enclosure catching roosters to put blinders on them or clip spurs. Our hunters always shot a mixed bag of wild and released birds depending on the properties we hunted. we maintained 1500 acres of grass and heavy cover, so we usually had good recruitment and winter carryover.
here in South Dakota, most of the big lodges are releasing birds at least 2-3 times per season now. Especially those that are running groups of 20 guys each weekend and who knows how many during the week. I don't care how many places advertise "100% wild birds." all that means is they didn't release the birds that morning and you are beholden to the state wild bird limit of 3 per day. I do a few corporate hunts each fall and I always laugh at the guides that try to act like the 60 birds we just shot are all wild. there are a few different ways to tell which ones are wild and which ones are released.
I get "left over" birds from a pheasant farm sometime between thanksgiving and christmas each fall. Usually 20-30 roosters that don't have any tails (long tailed birds sell out because they appear to be wild to the average hunter). We release them on 65 acres of grass and have a family hunt. It's not all that sporting, they don't flush the greatest and are pretty dumb, but it's fun to get all the family kids some shooting without having to walk the cattails and willow thickets to get to where the wild birds are that time of year.