PS5 will do amazing, but PS4 did so partially because of Xbox one being stupid out of the gate and Wii U bombing hard. There was no alternative. Switch is now successful, so even if Xbox isn't going forward PS will lose at least some sales. That being said, Series X looks to be a better launch situation than Xbox One. I think this generation will see all three (including Nintendo's next device) do really well, but none of them will dominate the others. Anothewords, no 100+ million sellers, but all three will be over 60+ million.