Meta has argued that sharing content with friends and family has become a much smaller portion of its business, as it competes aggressively with TikTok through its Reels video product, and that’s what the judge should focus on. But Hemphill says the fact that Meta has added products to its apps doesn’t mean its earlier products no longer matter. If a monopolist has power in one market, he says, that can give it a “leg up” in adding a new product, “even if it’s not as good as the competitors’.”