Coinbase is limited with regards to its availability from a geographic perspective and this project aims to be more global. It's decentralized as well since it's P2P. You wouldn't be buying from the business but rather from other users. Also, cash can be used for both buying and selling. Coinbase doesn't have this feature.
Thanks for your kind words. The project will be registered as a business if it is approved by the Adel Community within the incubator, so there is thus a greater level of liability for the business to deliver as promised. Also, money isn't paid to the company, with the exception of the fees, but rather to the other users.