???Modern Speakers???Life Expectancy???

The demise of my 20 year old amplifier has me thinking about this a lot lately..I have speakers that had manufacture periods starting in late 2012(Harbeth M30.1)& 2014(Dynaudio Excite X14)..Both are low hours usage & it's  likely neither is over 300-400 hours use..At 63 years old & failing health is it likely I will outlive the speakers or that I will need replacements in say the next 10 years?Is there any preventative  maintenance that will keep them fit for duty?Thanks much all.