I was on this flight as well. The facts are as stated by "yyzprincess".
My POV on the "impact" is different. I fly this route regularly, in Polaris when I need to get work done. Thus was the case here. As mentioned, no power after about 3 hours. My seat was in the "sleep" position, as I had taken a short nap. No power - flat seat for 11 hours, no light, no power for laptop. I need the light, as I need to access paper docs while working. I asked the FA if the seat could be adjusted back to vertical, and was told "no, only for landing". So I tried to work sitting on the bed, using my phone for light, until my laptop ran out of power. Extremely suboptimal way to work. Again, if I have no work to do, I fly Econ and sleep.
As an additional data point, the flight was PZ9 up until departure.
