Are you in the clothing industry yourself? I don't know the nuts and bolts of the trade myself although I did examine the jacket during a couple of fittings. They make their bespoke items on the premises and I was able to examine this and other work in progress so I think you are perhaps generalising. They do, of course, sell ready to wear items as well as bespoke but I certainly wouldn't describe it as "junk" even if the fit is not perhaps the same.
I have 3 other bespoke jackets going back to the early 1950's (my father-in-law bought nothing else) none of which are in any way tattered, creased, shabby or worn out in any way despite fairly frequent use, and I fully expect them to stay that way (moths willing) so I do think a lifetime of 50+ years is a good investment. Fortunately there are still some firms for whom "planned obsolescence" is not in their vocabulary.