G'day all,
Yes, a lively conversation here ...
I once tried after market cartridges for my Canon printer and it left fine streaks on my printed photos, so I went back to the original ones. The price of genuine ink has come down a little over time as newer models have arrived.
Yes Mowerfreak, couldn't agree more. The two issues here are 
[1] After-Market suppliers of parts or consumables are a mixed bag, 
and the bad ones have given that industry a poor reputation. 
Any after-market product should be as good as the original. 
[2] Many manufacturers design products with the deliberate intention
to 
defeat copying, or detection. I understand the giant Volkswagen
maker will pay heavily for that practice.
That leads me to my two cents on this one. Assuming we get 'right to repair' the single biggest issue will be the cost of labour
A great and true anecdote there 
prd. It is often said that
labour costs are the real 
cause of obsolescence. Whilst I think 
there is 
a truth in that, I'm not convinced it is 
the cause.
Good 
design for service, and a 
realistic pricing policy for parts 
and consumables is the way forward. If we can produce products in countries
with high labour rates, then we should be able to service the same products
at equivalent labour rates. That's a personal view reflecting the complexity
of this issue - repair or replace.
P.S. Got visions in my head of gml getting around with a baguette stuffed behind his back as a temporary fix for the lumbar support, waving a cheery 'bonjour' to passers by
PRD, I must say the imagery did appeal to my senses. 

The issue is, though, the ridiculous price of baguettes in this country ...   

Who's making the dough here!
Au Revoir---------------
JackI loved BB's observation:-
"Have you seen the price of Hyundai parts at all ???
The vehicles are cheap but their parts are outrageous !!!"I guess just another example if ink-jet mentality.