That’s true, but they did already try it and it didn’t catch on. There’s a section about it on the Wikipedia page (“Copy protection”).
That section also mentions that Philips stated that these discs couldn’t have the CD logo on them. Since Philips was behind SACD, together with Sony, you’d think they wouldn’t have imposed that restriction on themselves if they had the choice.
That’s true, but they did already try it and it didn’t catch on. There’s a section about it on the Wikipedia page (“Copy protection”).
That section also mentions that Philips stated that these discs couldn’t have the CD logo on them. Since Philips was behind SACD, together with Sony, you’d think they wouldn’t have imposed that restriction on themselves if they had the choice.