It’s really a good come up. But I disagree with this point. Yes they are in natural progression and the market will retain this products. But truth is people prefer to the products which are modern, ease of use and cheap. Economical and technical goals compete for every product and the product get to fall at one point when the better one comes. This is the wholesome truth. No products will retain its crest at the market. Competitive world will always leads to the regression of a particular product. We can relate this to the Darwin’s theory Survival of the Fittest. The more ambitious creature survives when compared to others. This is the exact definition for the market also. At one point when there comes a point of reduction in the usage of particular product the product will get vanished. For instance. Floppy disc is used by us during decades ago. Yeah still it can be used and no harm in that. But we go for the better options. So future generations will know that there was a thing called floppy disc they would never get a chance to see it virtually in markets. So I totally disagree with your point