A company has due diligence to protect their IP, or risk losing it. However, trademarks apply only to the categories or classes that the company applies to. Meaning another clothing company can't call itself Hanes. That's why you can have a Monster Energy Drink, Monster Cable and Monster.com for job hunting and a ton of other businesses with Monster inthe name. (Monster Cable was notoriously suing a mini-golf course that had Monster in the name).
Looking at the list of trademarks with Hanes in the name, Hanes Hummus is the only one I see that isn't owned by BHI, the company that owns Hane's underwear.