Yes, the tech was there anyway. Sony might as well have used it and its actually benefitted games. Games like God of war 3 and Uncharted 2/3 and others would have been restricted too much if they had to fit on a DVD. Blu ray was a good choice in the long run.
Xbox One, PS4 and Switch (+ Many Retro Consoles)
'When the people are being beaten with a stick, they are not much happier if it is called the people's stick'- Mikhail Bakunin
Prediction: Switch will sell better than Wii U Lifetime Sales by Jan 1st 2018