The figures don't look anything like growth rate of cancer, they look like growth rate of a toenail.. 10-15% a year.
Then the author claims that "spending is growing at an ever-increasing rate" like cancer. But it is not. Draw a trend-line over the spending graph, and you'll see that the growth rate is actually damn linear (and well aligned with revenue growth).
Rest of the article is reasons why spending should be reduced. Well maybe it shouldn't. As long as there is revenue growth, maybe it is better to invest the revenue on better tools. When revenue growth stops, you've got the better tools you invested in, and can then reduce spending by not building further new tools.