There are plenty of ways to differentiate in a competitive market. Good regulations set baselines for fair play, both toward customers and competitors. Whether or not that makes some aspects of those choices more similar isn't really relevant. Or if it is, it's because it makes them similar in good ways. Ways that are pro-customer and pro-competition, but they won't do unless legally required.
I agree that there are plenty of ways competitors could differentiate themselves. But in the current market, I think there are very few competitors, and even fewer ways they currently differentiate themselves. And the most notable recent regulations would eliminate one of the more meaningful differentiations.
