It will allow vendors to collect more money for their service while at the same time allowing customers to pay less for the same service.
This is because a decentralized service does not need a thousand people and billions of dollars of VC funding to run (take Uber for instance).
Instead there will be the smart contract (which will require funding so there will be a very small fee per transaction), the governance body (which is going to be like the shareholder system of the stock market so token holders), and the vendors themselves.
Multiple layers of waste will be cut (middle management, needing an actual corporation to provide a service) and it's a more natural way of doing business. It's a pretty radical shift from the way we're doing things now and the wheels are in motion which is why so many people are excited.