I am very surprised to read such bad experiences. I started using B&O with a Beomaster 901, Beogram CDX, and Beovision LX2500. And I owned a LOT of products while keeping them for a very long time. For example all the LX and MX TVs I got didn't had a single issue before 15 years of use, and fixing them was quite cheap. For loudspeakers, it is the same, never ever got a single issue from Beovox CX50 to Beolab 5, I still own a lot of them, I got almost all the range B&O made expected the Penta, that I bought used or new, I got several beosound/beosystem that I kept 10 years or more in intensive use, without a single issue.
My beomaster 4500 and 6500, like my beovision 7 are still working like a charm since day 1.
The only products I avoided were the ones with a lot of embedded software, in which B&O is really not good, meaning all the recent Beovision starting from BV14 and the newer series (Avant, Eclipse, ...). Even for the Beoplay range, no issue at all on my side.
While talking of the Keyring A9, I bought one new in 2001, the day it was available. I still use it today like it was at day 1, without a single issue using it all days to switch everything off when I am leaving home, and my keys and the A9 did fall down a number of times I can't remember. Just changing the battery, cleaning it up from time to time, and that's it. the A9 is now showing a silk aluminium instead of the initial glossy one, but working like at day 1. Same for my Earphone A8 bought in 2001, working like a charm plugged to my laptop and I spend all my e-meetings all the day long with them. I don't know a single trademark that produced an in-ear headset that had been able to last 20 years without breaking the plug or the cable at least.