A couple of years ago, I gave a talk at State Of Open Conference. To register as a speaker, they required you to have accounts on no fewer than four proprietary platforms. They used Google maps for their maps ;in spite of the fact that OpenStreetMap actually had the entrance to the venue on their maps and Google didn’t). They used some additional proprietary platform for speakers to communicate.
I took away the message that the state of open is ‘not great’.
Every single one of the proprietary systems that they used had an open source / open data alternative and, in most cases, the open version was better.