Basically, he advocates a new license that he wants to develop that basically improves remuneration for open source developers. Use case: A "Post Open" software is used by a company, then this company has to pay a certain percentage (1 to 10%) of their revenue to the "Post Open" software. If it is using multiple "Post Open" packages this percentage is divided among them (according to usage).
Software in this scheme will be allowed to be modified, redistributed etc. and it will also contain a public API that defines the boundaries of the program (so it's not about linking anymore).
I hope that captures the key points.