1. Nor did I say it did. I was just throwing an actual number out there, and making an observation about it.
2. I don't see it as an issue either. I'm not sure who really wants that to happen.
3. I don't understand what you mean, I guess. At the time when these older games were released, many of them came out on both CD and on a set of floppy disks. If you got the floppy disk version, you sure as hell did have to "insert disk 1" to play the games, because it was copy-protected. Copy protection wasn't always considered necessary with CD back then, as it was not easy to make pirate copies. But the CD needed to be present to confirm that the disk existed. (At least on installation.)
Morrowind checks for the presence of a CD (but a mounted disk image works.) In the case of Battlespire (which I don't have) apparently some of the content doesn't get installed from the CD; that in itself enforces the need for the CD.
4. Zen/Beth bought Fallout several years ago, but they didn't pull the games off GoG until last year (2013), when the previous owner's Distribution Rights expired.
They took them off GoG last year, but they're still listed for me (and I can still download them from there) since I had already bought them.