Microsoft will never succeed at making a successfull trend in making PC games that run off the CD like console games. A: it's too limiting. B: it's too slow, access speeds are what? 10% those of hard disks? Performance would suffer. Especially with the multi-tasking enviornment that is Windows.
No way that will ever catch on... period.
I thought it was 25% that of hard disks, but it regularly caches the data.
A 1x CD-ROM drive should be able to read a 650mb CD in 74 minutes.
A 2x ... in 37 minutes.
A 4x ... in 18.5 minutes.
A 8x ... in 9.3 minutes.
A 16x ... in 4.6 minutes.
A 32x ... in 2.4 minutes.
A 48x ... in about 1.5 minutes.
A 52x ... in about 1.4 minutes.
Its about 8.7mb/minute transfer speed at lowest speed. Remember sustained read and sustained write speeds are different. Your limiting factor is most people still have IDE drives, many people make the stupid move of putting a hard drive and a disc drive on the same IDE channel; you can only run one at a time. Normally, the drive will read information, put it on the disc cache (2mb?), load it to RAM, load it to HDD cache (8mb?), and write to the hard drive once you have ~8mb of data in cache. It slows it down, compared to being able to skip storage in RAM. Only one IDE drive can be active on a single channel. I myself have 3 IDE drives; one CD-ROM and two HDD. The HDDs are on the same channel; one is for Windows and one is for Ubuntu.
Still, its a grey area with copyright laws; who owns the disc and how many computers are they allowed to use it on?