If you read Roku's version of what is being negotiated and then read Google's, then note that Google only discusses the popular one (codecs) and seemingly forgets all the ones that make them look bad.
I don't consider Roku a "good guy" with all of these disputes, but on this one based on the information we have it seems like Google tried to flex and got rebuffed. They then thought the recent other disputes w/Roku would give them cover, but it hasn't worked too well so far.
PS - I do feel like Roku's position on the codec though is a little weak/vague. But Google's lack of statement about the other 90% of the dispute is worse.