Re: Forced format shifting apathy....
format obsolescence is not generally caused by manufacturers.
Tapes became popular alongside vinyl because they were portable. The quality wasn't as good and all that rewinding was a pain so they never took over from vinyl.
CDs are considered better than vinyl by most people because they are easier to use and allow you to jump forwards and backwards across the disc accurately and instantly. They didn't completely replace tape because they weren't as good on the move.
mp3s have replaced tapes because they're better in every way. For some people they've replaced CDs, for others CDs are still useful as a way to buy uncompressed DRM free music.
DVDs combined with PVRs have replaced VCRs because again in almost all use cases the new product is better.
examples of products that are their purely to line pockets are minidisc, DCC and bluray, these are products that have benefits over their predecessors but not enough to warrant going out and repurchasing music or video collections to take advantage of.