You're absolutey right! But, I think long term, the main driver will be price. No middlemen to take a cut and no advertising costs.
the problem with this is the customers that will utilise your platform. they need to grasp first how to apply your services in their everyday lives. yes you are right, we are in the era of having a decentralised ecosystem everywhere but we are still in the stage of mass adoption. that's one thing that you need to address first. how to entice your customers for your niche