CITES only matters if they are going to cross a national border.
Fennecs are better than other species but lots of people do keep reds you just need to expect to have your house trashed and give them a big out door area to play.
There are a lot of fox owners on this forum. It's te best place to go to learn about them. Not trying to lure people away
but honestly if they want one it's better for the fox that they go learn.
First ting to do always for exotics, or native wild animals, is find out if they are legal to own in your state, county, and city and if you need to get a permit ect.
Actually vulpes vulpes is domesticated. They ave been bred to differ from their wild counter parts and to be much tamer. When they first tried to bred foxes for fur they couldn't survive unless in big natural like enclosures. They ave been bred to be tame enough to survive in little fur farm cages now.
Domesticated does NOT mean puppy dog tame. Many dog breeds don't even meet tat notion. In tack male horses, Stalions, are dangerous. You wouldn't keep a cow in your apartment. And a goat in the house may do as much damage as a fox. All of te above though not a good pet for most people are considered domesticated.
Actually the dictionary definition of domesticated is Tame or accustomed to living with people or suited to a specific purpose by humans.
For the record hamsters have not even been kept as long as foxes have by people. But no one argues they are wild animals. Every species or breed a person may get will ave it's own positive and negative traits and instincts to deal with. Just telling someone a fox is a wild animal, especial since the ones people keep as pets aren't, tells them nothing.
Back on topic. Foxes smell skunky, worse than a ferret or something like that. Actually getting a domestic skunk would be less skunky(also genetically domesticated on fur farms). They are super energetic and supper smart and will be into everything. They will see any small pets even kittens as prey or play toys and hurt or kill them. Assume they will bite you at some point. Heck my dog has even bite me. Once they get fully adult around 2 they start calming down.