I don’t know whether a feral animal can become a house pet, but house pets start behaving like feral animals when abandoned. My hometown had a problem with packs of dogs that would attack smaller dogs and people. Now and then, the police had to pull up and shoot the larger dogs. The local paper investigated and found that people in the wealthier surrounding towns had been dumping their dogs in our town. Some were caught pulling up in their cars, pushing their dogs out, and driving away. Coincidentally, back then, the Republican party ruled our town. I don’t think the dog-dumping was political, though. I think people in the wealthier towns just looked down on our working-class town, and they didn’t care about their pets, either.
Little kittens definitely can be house broken and it is common.