Sometimes I am hoping my stuff fails so I have an excuse to upgrade! That is the glass-half-full perspective. Unlike my dad, who still uses his Adcom GFA and GFP with Snell Type D speakers, he bought all new in 1995.
Electronics are a 50-50 prospect and can fail at any time, whether in a USD 1,000 or 10,000 component. It is the warranty and customer service that differentiates companies. Also, better QA/QC can mitigate the mean time to failures, accounting for part of the higher cost of the higher-end components. I can think of a couple of Canadian companies that have 10 and 20-year warranties. Now they have confidence in their QA/QC in contrast to some ChiFi with 1-year warranties
This is why every time I consider a car-priced component, I think to myself, "It's just a bunch of PCBs, chips, and electronics packaged nicely".
So after 5 years of continual use, having a failure is not that surprising to me, especially with modern stuff. I refer back to my dad's Adcom stuff.

