About DAT's demise, I vaguely recall something with the RIAA wanting to kick ass, and then the first DAT units couldn't do dubbing from CD (didn't have the 44.1kHz option). Around 91 decks with SCMS came out but it was too late.
Many DAT owners love their equipments, and I remember considering a DAT walkman as my next portable during 2000 and the first half of this year. In the end it's just out of my reach. Cost would've been around $500-700 for the walkman plus $90 for a converting optical cable. I'd need new rechargeables, and after a couple years the unit may need a professional cleaning. And everyone says the models I would've liked has a horribly slow mechanism
And there's the horror stories with tape dropouts.
Ever wondered what if those digital micro cassettes (Sony's NT format) made it for music use?
The frequency response isn't at CD level but then again it never received much development after launch.