In a nut shell, NO..
There are very few full time guides in this country who live above the poverty level.
However there are some outfitters who do pretty darn good. It's all about knowing the business and having a good head on your shoulders. There are a lot of places one can run a hunting business besides Texas!
Here are a few that come to mind, Alaska, Montana, Wyoming, Colorado, New Mexico, Arizona, Idaho, Oregon, and god only knows where else.
It is not necessary to have private land to run a quality hunting outfit. There are some fantastic hunting and guiding opportunities on public land in the west.
Guiding is a tough way to make a living but it can and is done and it is a good secondary income if you can work in the time to do it.
Here is an example of thinking outside of the box.
A good friend of mine who is a full time AK guide told me that there is a real need for quality bilingual Guides in Siberia right now and that they are making very good money hunting bear and moose for American outfitters doing business in Russia.
Just an example, but don't let somebody who is so narrow minded that they can't see beyond their home state give you bad advice. If you want something bad enough there is always a way to make it work out.
Just be aware that you may have to sacrifice to get it done.