http://www.nationalgeographic.com/donate/index.html"...Mission Statement
One of the world's largest nonprofit scientific and educational institutions, the National Geographic Society's mission is to increase and diffuse geographic knowledge. Today National Geographic inspires people to care about the planet.
The National Geographic Society is a 501(c)(3), tax-exempt organization....."
No one "owns" it.
Edit:
I found this on NG Channel's website and note the link to Fox!
"....What's on the National Geographic Channel?
Check our interactive schedule, print a copy to keep on your fridge, send yourself e-mail reminders, and more. Try it out >>
Catch sneak previews of upcoming programs.
Take a peek with fast-loading program previews. Watch now >>
Get our newsletters.
Keep current with what's on the National Geographic Channel. Our free weekly e-mail, National Geographic Channel This Week, lets you know what's on and when. Our free monthly newsletter gives you the latest on upcoming programs and special offers. Sign up for both >>
Advertise with us.
Keep up-to-date with exciting advertising opportunities that exist on the National Geographic Channel.
Visit our Ad Sales Web site >>
FOX Careers!
Step into the spotlight with an exciting new job at FOX. Visit our job site >>
Stay in touch.
We want to hear from you. E-mail us questions, comments, or feedback: comments@natgeochannel.com >........."
So there appears to be a link. Maybe he operates the channel by contract FOR NGS.