I think they can be very effective, in the same way that some pheasant shoot syndicates can be very effective. It also very much depends on type of ground and the expectations of the land manager. There have been plenty of good groups / families that have taken the shooting rights over a piece of ground and keep it in good balance between the estate, the farmers, forestry and the sporting side of things.
The syndicate / hunting club model works very well in other parts of the world.
Where is absolutely doesn’t work is where interests are non aligned. Especially when it comes to forestry / rewilding where the woodland managers want every single deer shot.
I certainly wouldn’t be prepared to pay any money for those sorts of operations unless it was very much worth my while - ie I was essentially paying for raw material for a venison business, or was putting the deer shot into another contract where you are getting paid for every deer going into the larder. And yes it does go on - I was part of syndicate where we lost it to a gentleman who was doing exactly that.
I think much of this is now academic in Scotland as we are rapidly getting to a state of affairs where deer numbers are too low to justify paying or charging large fees for stalking.
Landowners have shot themselves in the foot. Many estates, hotels, guesthouses etc do rely on stalking and shooting guests in the autumn and winter period. Not many others will pay to be out in the Scottish countryside at that time of year. So sources of income will fall hugely after end of September when the weather turns. And trees take a bloody long time to grow before you get an income.
They learnt this the hard way in Africa. They have a phrase - if it pays it stays. Many of the rewilding companies are rapidly finding that money flow is all one way - outwards.
I think the other big tragedy is that we have lost deer that are hefted to the land, know how to survive in harsh environments, and over several generations of good management, they have good genetics. This has been destroyed in just a few years. The deer are gone, so too are all those who managed and looked after them.
As for contractors - well with deer numbers right down it’s getting increasingly hard to make money, let alone cover the basic costs.
So going back to the original question, I think syndicates can work well. They can also be an utter racket.