Longevity of modern passive components

[Riggers]

Hi All
There have been a few posts re how to know when valves will need replacing. I would like to know how long one could expect the bulk of the passive components in a modern amp to last, (ie. Capacitors and resistors).

Looking around the web at people servicing/fixing valve equipment built in the 60's and 70's the 1st thing that seems to been done is to replace ancient/decrepit electrolytic caps. Given that I own a WD88VA XL built early 2015 populated with modern high quality parts such as Soniqs polypropylene caps and the like, what sort of serviceable lifetime (barring catastrophic failure) should I expect.

Cheers

Phil.