"The only advantage the 4runner provides is more space inside."
You forgot; much greater potential reliability if maintained the same.
Agree; in the Australian Outback the British Land Rover was first in the 40s, then the various Jeep models in the 50s and 60s. Both were virtually put out of business by Toyota, First with the Land Cruiser and then the 4 Runner, which is now almost standard equipement there.
No matter what show you watch, from Crocodile Dundee to locally produced programs, the 4 Runner is always the vehicle of choice. No other vehicle seems to have that tough reputation that you can trust your life with.