I have speakers 70+ years old.. They sound as good as they did new. In a lot of cases, BETTER... What is suppose to wear out? Surrounds?
The old Co/Ax RED center have cloth surrounds, they will last as long as the cones, 100+ years. Silicone is your friend..
Everything requires maintenance. I don't care who makes it.. I've bought speakers at least 25 times with LOOSE drivers, screws missing.. Sound REAL bad....
Two hours later.. Better than new.. It's always air leaks, whether surrounds or loose drivers.
Why better? I didn't have to break them in.. :-)
Regards