Most CD/DVD/BD players do not use CDROM drives, they use 1x speed slide-drawer drives. Computers went to slot-loaded drives for robustness in office environments, and speed multiplication for better performance. Speed multiplication is irrelevant for entertainment content, and I would argue it's a bad thing, because faster drives make more noise. Slot-loaded drives are slower because there's a mechanism that has to grab the disk and position it on a spindle, and that generally takes longer than closing a drawer. CDROM drives also have longer loading times because some low-cost (and therefore low performance) function in the drive has to recognize the disc format and figure out what speed to spin it.
The Oppo 105, for example, does not use a cheap computer CDROM drive. It uses a rather expensive, sliding drawer design, with extensive isolation and noise reduction features, and appears to only work at 1x the target disc speed.