You have to remember economics is a model and not exactly how reality works, there are many examples where you will find the supply demand curves arent linear and there are also other things to take into account. Companies can artificially move the demand curves, for example the ad companies can change the quality requirements of what ads they allow, creating more demand. These calculations are best done with real numbers and experiments, kinda like A/B testing and I would guess that the ad companies have such infrastructure