"Richard Poynder has elicited a splendid summary of OA by the person who has done more to bring about OA than anyone else on the planet: Peter Suber
Here are a few supplements that I know Peter will agree with:
1. Potential CHORUS Catastrophe for OA: Peter's summary of OA setbacks mentions only Finch. Finch was indeed a fiasco, with the publishing lobby convincing the UK to mandate, pay for, and prefer Gold OA (including hybrid Gold OA), and to downgrade and ignore Green OA.
Peter notes the damage that the publisher lobby has successully inflicted on worldwide (but especially UK) OA progress with the Finch/RCUK policy, but I'm sure he will agree that if the Trojan Horse of CHORUS were to be accepted by the US federal government and its funding agencies, the damage would be even greater and longer lasting:"