The shift toward open source conversational AI

In July, Uber released a new open source AI library called the Plato research dialogue system. Why are so many new libraries being announced? There seems to be a trend of developers adopting open source conversational AI and leaving behind closed-source alternatives. Most of the key tooling for building conversational AI that has been developed in the last three years is open source. And companies like Uber and Cisco want to be in the running to define the standard conversational AI stack.