Reading Comprehension (RC) | Re: Jon Clarks study of the effect of the modernization of a telephone ex

Hi, could an expert please point me to a material, an app or a website where I can get comfortable with this sort of language? This passage pretty much blew me away and I had to spend a lot of time (not looking at the timer) just to understand what the author meant. I appreciate that I need to work on my weakness but I normally don't find this sort of condensed language and information in normal newspapers and articles I read on Economist etc. I would really appreciate a pointer to the material
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