How long do good speakers last?


I just ordered a set of Sonus Faber Olympica Nova Vs, my first foray into nice speakers. I turn 51 this month and am hoping these will be the last speakers I ever buy. But it got me to thinking - how long should I expect these speakers to last? Or any good speakers for that matter? Does the foam eventually break down? Issues with general wear and tear? Appreciate your perspectives!
128x128bigtex22
Forever.  My Avalon Eclipse' are 30 years old and fine.

My dad's John B Lansing speakers were bought in 1961.  Still working fine in our living room.  They are now 60 years old, and are quite lovely endtables to boot!
Oh come on, big, you just wanted to brag about your incoming speakers. I mean who wouldn't? They are beauties to behold and I'm confident that you will cherish them for decades to come.
" am hoping these will be the last speakers I ever buy "
Still one of, if not the, funniest lines in audio.
I've owed apogee divas with the active Dax for 30 years. They perform beautifully. About 7 years ago I developed a frequency-specific buzz along the top edge of a woofer ribbon. I decided to go with Graz ribbons for both speakers,  along with a complete refurbishment of guts and wires by Bill Thalman at Music Tech in VA. He does a fabulous job - the speakers retained all their quality characteristics, with more extended bass, and dynamic range. Timbers and imaging is second to none. Bottom line, it was the best value decision I've made, rather than purchase something more expensive with inferior musicality. Believe me- I checked out many replacement options!! It is worth buying the best you can and maintaining them. New front end equipment (Rossini DAC, D'Agostino amps, ARC preamp) has improved the sound substantially and impressively - old speakers do more that "keep up" - they expose improvements and deficiencies truthfully. Everything needs maintenance or repair occasionally but can last many years of frequent use. In my 60s now I hope to keep these till I give out, hopefully decades from now. If I need to downsize I will very reluctantly, but it would be at the loss of my beloved Divas! Hope this perspective helps.
My Acoustat 1+1's electrostatics are doing quite well, thank you for asking. I had to refoam the RH Labs sub but it also is doing well. Call it 30+ years for all of them... so far!
I have to go retrieve my dad's B&W Matrix 800's... I'm HOPING they'll be okay as they've gotten very little use in 20 years. *fingers crossed*
Happy listening.