95% of hunting done in Africa is high fenced. Texas great alternative and great place. You can find Aoudad, axis, and black buck free range is Texas in places. pretty much everything else will be high fenced. As long as is a big enough property it's a good hunt it's worth while. Don't get hung up on the high fence if it's fun and you like it, do it!
This couldn't be farther from the truth. You are confusing Africa with South Africa. You are also confusing TX Hill country with the rest of Texas.
I'd venture a guess that 5% of the state of Texas is high fenced. Possibly less.
We have Alligators and Black Bears in the East (can't hunt the bears, but you can hunt Gators!). A short 14 hour drive to the west will get you into the Glass, Chianti and Davis Mountains where you will find Desert Bighorn, naturally occurring Elk populations Javelina and a ton of Aoudad. Go another 12 -14 hours north and you can hunt Mule Deer, Whitetail and Pronghorn in the panhandle.
In between all of that, you have the King Ranch with Nilgai and Whitetail, Pronghorn before you hit far West Texas. You will find the odd game ranch outside the hill country, but they get scarce the farther you get from there.
Texas is enormous and the hunting possibilities are vast. It's not a fenced state by any measure.
Yes, the majority of hunting in South Africa is fenced. Most of the plainsgame in Botswana is fenced (by law, or you are forced to pay license fees.) but even then, I have found their idea of fenced can be a bit murky in areas, because, "There is a fence somewhere". The ranches I have hunted there are enormous. 110,000 and 150,000 acres with one perimeter fence.
Namibia seems to be 50:50 (roughly). They have some incredible communal conservancy properties that are as wild as it gets. I hunted the Ehi-Rovipuka and Omatadenka conservancies. Unbelievable experience with Lions, Leopard and Elephants roaming the bush.
Dangerous game, outside of South Africa is almost all free range. Zambia and Zimbabwe do have a couple fenced ranches, but vast majority of DG hunting is free range. Tanzania and Mozambique have none that I'm aware of (possibly there are some, just never heard of one).