The difference is in degree, and with the point that coupons/discounts/dynamic pricing have gotten to I think we would be better off if those things started getting banned as well. The main point of all of these things is to confuse the market and make it less efficient (so that companies can extract value instead of creating more value). We've gotten to a breaking point, and we should reject all of it rather than justifying new abusive dynamics based on the less-harsh dynamics having been tolerable before companies became completely shameless.