Well, sure, but that’s essentially impossible to define for a product with zero marginal cost. You’d be making it illegal for a small company with x sales/year to sell for the same price as a large company with 2x sales/year.
At a very minimum, you can make it illegal to price a product below its marginal cost. This would have prevented e-commerce/rideshare/delivery companies from using VC-funded discounts to gain market-share and destroy less-funded competitors.