Indeed. I find it interesting to look at the generational outliers on that curve: The Cray-1 wasn’t eclipsed in raw FP compute by a consumer system until the Pentium more than 15 years later.
Most of the outliers look like, "Someone was willing to spend large amounts of money."
Another outlier was Deep Blue. Estimated cost of about $10 million. Its estimated strength was matched by top end PCs about 9 years later. Your phone today is better than those PCs.
http://www.roylongbottom.org.uk/Cray%201%20Supercomputer%20P...