I think you posted the same video twice, but I'm not disagreeing that domestic animals generally act less purposefully and intelligently than wild animals - they've lost the survival skills that they needed as wild animals. For example, many dogs like to dig big holes, but they are not remotely capable of building a proper den in which to raise a litter. And of course many of them bark at small animals, but most of them don't have any understanding of how to kill them (except some breeds which are selected for it).

I think these foxes are a lot like that - they love to hide in "dens" provided to them (plastic tubes), but I doubt they have the ability to build shelters or find food in the wild. Hence the less purposeful behavior - what are they going to do in their spare time, solve calculus problems? They play and wait for belly rubs and food. But I don't see the difference with pet dogs which are not bred and raised for specific work.