In one sentence: why in 1980 could I buy a turntable such as a Technics SLD2 for $130 and a cartridge such as an Audio Tecnica 12XE for a total of $160, while today I might spend $3000 and still not be able to track the Telarc 1812 cannons[when I could do so with the $160 1980 expenditure]?In 1980, vinyl records were the medium of choice for home music reproduction. Millions upon millions of turntables, tonearms and cartridges were manufactured and sold every year. Today, that number would be in the mere thousands, not millions. Economies of scale dictate pricing. The fewer units a company's fixed costs can be amortized over, the higher their prices must be to stay in business.
Additionally... what they ^^^ all said about the goal of our equipment.
I don't own a copy of the Telarc 1812 and never will. Since the track looks like the photo Almarg posted, I've no intention of subjecting my $5K LOMC to it. My $15K vinyl rig plays music so much better than my old $500 rig that I can't stand to listen to the old one. If a rig isn't worth listening to, I couldn't care less what sort of torture tests it can track.