Digital remastering of CD's

What do you suppose the CD manufacturers are waiting for to put out only digitally remastered to 24 bit discs for older recorded music, classic rock, older jazz, etc? I continually replace all of my older vinyl LP's but only want to buy CD's that have been digitally remasted to 24 bit or HDCD. You can find these scattered throughout a retail CD store but they're still in the minority. These digitally remasted CD's to 24 bit sound SO much better. Example: I just purchased CCR-Willy & the Poor Boys CD. This was one of the LP's I needed to replace. Not digitally remastered to 24 bit but I took a chance on it. Well, it sounds down right awful. Horrible. No bass ext, muffled, etc. How could Fantasy Records even sell this product? Conversely, I purchased Jackson Browne "Late for the Sky" remasted to 24 bit. What a huge difference!!

Why do the record companies not smply remaster all of these older recordings to either 24 bit or HDCD? I realize it can be expensive but with CD sales declining, it could be one way to boost sales and renew interest in buying CD's. It could be a boon to the CD business. Can someone in the know explain this to me? There are so many older jazz recordings alone that I would love to have but I will not purchase because they sound so tinny, muffled, and simply terrible.