It's not real common because of liability.
In my younger days we hunted hogs for people. At one point between the group of us we had access to over 150K acres. My buddy and I were keeping count one year of how many hogs we killed as part of a deal on a forum. We hit 1000 hogs and the year was not over. We finally gave up counting.
Our "in" was always having some sort of connection with the land owners which was usually working cattle, building fence, hauling hay, etc. There was some word of mouth also. Even then we had to sign wavers and there were restrictions on guests and usually other rules that went along with it.
The same creek I talked about in the crappie thread has a bridge that goes across a nice dishing hole. When I was younger a lot of the people in the area would fish off the bridge and even jump down and fish the banks around that hole. We would generally stop when in the area and bs with the neighbors. It was not uncommon for a local grandpaw to have his grandkids all down and be fishing there. The usual deal... they would proudly tell my dad who they were and who there momma and daddy was.
I remember telling my dad one time when I was real little... why do we let those people catch "our" fish. He made sure to tell me they weren't hurting any one and not every one had places to go so it was good to let them enjoy it too.
Fast forward to when I was a teenager people started dumping trash, they would travel down the creek and up on the property, they started breaking in to a barn, and it just went all down hill. The last straw was we came by and some people we didn't recognize were all down in the creek camping with junk every where. My dad stopped and talked to them and asked them to just make sure to clean up when they left. One of them started smarting off and being an a hole. They shut it down after that.
My dad went from... we need to share... to constantly being worried about liability... just in my short lifetime. It's sad but people and society in general ruined it for every one.