if u have any doubt.could check out silk/cotton suit from Agnes B homme, I like their suits quite a lot. local shop raffles tailor also has a good collection of silk/cotton suits including tuxedo ones.
I have no means to offense you but I tik ur answers logical according to ur economic theory but actually do not make sense in the real world. You should know it better than me that all the econ models are not 100% correct because that are simply too many factors to be considered. Yes, classic stuff will not be out of date forever but that doesn't mean that you could wear the same SUPer Classic piece for every formal occasion.