Yup, the law of supply and demand does tell the important parts of the price story. Using software to help set prices lets suppliers converge on the market rate more swiftly, but doesn't change that rate by a lot. It's the same when a buyer uses software to see a long list of market prices. It helps them determine their demand price, but doesn't do a lot to move it beyond the supply and demand story. Banning such software would reduce the efficiency at which we arrive at those prices on both the high and low side. It's not clear that demanders would benefit more than suppliers.