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Sony won't phase out Blu-ray movie and game discs, only ceasing production on consumer BD-R
(www.tweaktown.com)
This is a most excellent place for technology news and articles.
No. Sony was one of 9 companies that started blu-ray in 2002. There are more now that can license production of it.
https://www.sony.com/en/SonyInfo/News/Press/200205/02-0520E/