I agree with the above posts but I do think it goes deeper than that.
It is a somewhat different discussion for South Africa than some of the wilder areas. I had some pretty frank discussions with an outfitter on this in RSA. He, and many, outfits were contracting with landowners or lease holders to hunt their DG. This was really more for buffalo... He claimed he was actually not making anything on the trophy fee on his buffalo, and was strictly counting on the daily rate to make a profit on DG hunts. And he did not say it, but I'm sure tips helped keep his camp going as well... He was hoping the clients would shoot some PG where the real profit is. I wanted a two week hunt with DG and PG and when he saw my list of PG was long enough, he was happy to discuss day rates.
Another outfitter in RSA who offers premium PG hunt areas, and has in the past few years started to offer buffalo in an APNA by Krueger, but has very expensive buffalo hunts... Claims to not make anything on them either and is doing it to 1. keep his good clients coming back to him rather to go elsewhere for buffalo. 2. Hoping they will hunt some PG while they are there.
As for places like Moz., Zim., Zambia, Tanzania, and others such as Central and West Africa.. They costs are a lot higher just getting supplies in... On my Zimbabwe elephant hunt, we were in tents that have to be put up and taken down seasonally. As does the generator, solar panels, plumbing... Then they actually hauled in ice and fresh produce every few days... It was easy there as it was only a 4 1/2 hour drive one to get there! Compared to 10 or more in other areas like the Selous. In RSA, even on a DG hunt, your PH is going to pull up to a pump to fill up with fuel and some attendant is going to check the oil and wash the windshield. Tires and such will be fixed in a shop. In Zim we had to refuel out of big drums hauled in. Patch tires out in the wilderness and pump them up by hand.. If the parts were not on the truck, we were not getting them anytime soon!
As for the two PH's... I will do my best to avoid that and when I see that is standard practice for an outfitter or required in an area.. I simply don't choose to book there, unless for a very specific reason. As Bill would point out, personal choices and having those choices available is a good thing! Understood it is required in many cases, such as the raised lion hunts in RSA. But it is my desire to not be going through the bush with a marching band! We already have the tracker, PH, hunter, observer and often a required government scout. Now add a second PH and his tracker and it is parade! But I do recognize it as an added cost that has to be paid in those instances. I have learned to ask specific questions as to whom will all be along on the hunt