I am considering archiving 24/96 files to DVD but I am having one or
two problems. If I simply copy the files to a UDF filesystem on the DVD
my universal player will not play them back. This is not necessarily a
stopper but it would be a significant advantage to be able to hear what
is on the DVD. However, if I mangle the files a bit into a DVD-Audio
format/arrangement the universal player will play them back.
Unfortunately, I am reluctant to use a format which may soon disappear.

Is it usual that consumer DVD players will not play standard audio
files?

Are there modestly priced DVD players which play standard 24/96 audio
files?

Are there modestly priced computers with good enough analogue circuitry
to work with 24/96 files?