@mijostyn: You are saying that "modern ESLs can be virtually immortal" but as far as I know at least the Martin Logan panels are said to have a limited life expectancy?! I never understood why. Electrostatic headphones can last many decades...
How long does it take a decent quality speaker to "wear out"?
After all, they do have moving parts and capacitors. . . .
(I suppose that "decent quality" s a relative term. FTR, I am running a pair of the older B&W 805s, and for all I know, they may not actually meet the criteria of "decent quality.")