Audiophile Speakers with 25 yr + Longevity

Cones and domes will likely be more durable than stats, ribbons and other planar types.

Well, I would like to mention the older Mirage M series speakers. Not much for looks but they were very well made. The main drivers do NOT require new surrounds like Infinity speakers. I had a 20 year old pair and they sounded as new.

rubber surrounds, not foam surrounds is #1 for long life.
Foam surrounds WILL rot away after a dozen years.
Rubber may last a lifetime if no ozone or sunlight hitting them. Fabric also seems to last a very long time.
Old Magnepans had glue problems and needed regluing. Newer ones are not supposed to have that problem anymore.
Otherwise just about any speaker can last a lifetime. If you want to use them for a whole lifetime.
Plenty of old big 1950's speakers still in use..