It's obvious that the release of the PS3 has seriously helped the sales of Blu-Ray discs, but I doubt that people that have bought a PS3 would be buying loads of Blu-ray discs. People that own a PS3 will only buy a Blu-Ray disc if they have an HD TV also, those with an HD TV are only likely to buy one or two Blu-Ray discs at the moment.
Anyway, the sales at the moment show that Blu-Ray is leading HDDVD by 55% to 45% which really isn't much, but don't forget that HDDVD discs were on the market at least a month before Blu-Ray and Blu-Ray player prices are much more expensive than HDDVD player prices.
I think we will be able to gauge the format war better in a few months when we see sales comparisons.
But at the moment I would say that Blu-Ray holds the advantage and if they can get the costs of the players down significantly and the PS3 is reduced anytime soon, then Blu-Ray could run away with it before it's really started.
Prediction (June 12th 2017)
Permanent pricedrop for both PS4 Slim and PS4 Pro in October.
PS4 Slim $249 (October 2017)
PS4 Pro $349 (October 2017)