> But when people say things like "capitalism has no need for X", what they are bemoaning is that the bulk of the market is choosing different tradeoffs.

What I am bemoaning is planned obsolescence, under capitalism there is hardly any incentive to make things more durable unless absolutely necessary. Superfest glasses may or may not be an example of planned obsolescence winning over durability as I do not know the costs to produce them and it seems there are some downsides like breaking rather violently once their time has finally come.