Speedy,
You may be suprised to find that most boutique, high-end manufacturers that produce CD/DVD players OEM a basic transport from one of the mass-market mfr's and then customize/replace the internal circuitry. This is often the most cost effective and time efficient method of getting a player to market.
And, yes, I believe (some/all of?) Meridian's earlier CD players were based on an OEM'd transport, but in their own physical chassis. The 800 and 596, however, are entirely of Meridian's own design. They do purchase an "off the shelf" computer DVD drive, which only makes sense, but everything else is of their design.
From my engineer's perspective, this makes perfect sense to me, rather than "somewhat weird". For the "leader in digital processing", Meridian focuses R&D efforts on what they do best and then leverage technology from other companies that focus on what they do best. Following your line of reasoning, one may argue that Meridian should be designing and building their own DSP engine's rather than buying them from Motorola. Perhaps Meridian could design and architect a superior DSP than Motorola (or Analog Device or Toshiba...), but at what cost? The NRE (non-recurring engineering) charges and R&D dollars to do so would make the resulting products very expensive. As if they aren't already... ;-)
Sorry if I'm ranting a bit here, as a hardware design engineer, I've seen far too many examples over the years of the NIH (not-invented-here) syndrome. Engineers who think they can "do it better" than the company who's entire business focus is to build some widget. It's classic make vs buy decision making and horizontal vs vertical company integration.
Regards,
Dan W.