I can't locate if anyone after you corrected this, but I believe you are getting two point comingled and this article here talks about them https://www.nbcsports.com/washington/nationals/timeline-never-ending-nationals-orioles-masn-dispute -- 1) the "additional 1% per year" thing is that the National get 1% more of ownership in the network each year, for a certain amount of time. The Nats started with 10% ownership of the network and starting in 2009 they got an additional 1% equity until their equity/ownership capped at 33% 2) what I think you're referring to regarding "until 2012" was that the network's right payments to each team were $20 million each in 2005 and 2006, rose to $25 million in 2007 and then had $1 million annual increases through 2011". In the article I just mentioned as well
Also, everyone remember that whatever rights fee the Nationals get, the Orioles get the same rights fee. In the deal. Parity. While that is somewhat moving money from one pocket to the other for the family, its still going to affect MASN and with decreasing carriage fees due to cord cutting, MASN could be on the verge of bankruptcy (or at least poor financial footing) in the near future. Oh well.