I'm honestly not sure how you could make the case that they aren't maintaining and abusing monopoly power. I mean they literally blatantly copy the designs of other companies who sell on amazon, then put their own results for their own products higher in search results than what they copied off of. It's incredibly blatantly anti-competitive.
At this point, they don't have to rank it higher and people would still buy it. They are like Kirkland of Costco most often.
It is one of the few brands on Amazon you can count on to not be Chinese crap. Even if it is made in China, the Amazon Basics products are generally good quality.