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!
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My speakers are over 40 years old. The surrounds on the woofers have been replaced once. Probably cost $50. Take care of them, they should make it to the end with you... If you want.
Foam only lasts 15-25 years depending on climate. DIY repair. I did 10 inchers for $35.
I’ve never had any other entropy issues in 50 years.
depends on the speaker and their construction, most last quite a long time if not damaged

as the poster above mentioned, worse come to worse, mids and woofers may need surrounds to be redone
 Congrats on the 5’s I have 3’s,1’s and center on the way.

my current Revel F32’s are 18 yrs old and no sign of physical wear.
i am sure climate plays a big part