Under a Marx labor theory of value, the professorial labor to produce a classics degree holder is almost certainly more expensive than the labor to produce a (edited: CS) degree.

It subjectively seems near universal in CS that the surviving graduates self taught themselves to program in high school or earlier, whereas AFAIK classics degree holders pretty much require professorial direction and education. The "greater CS community" aggressively self educates whereas I'm not sure the greater classics community does to the same extent.

Business, such as modern higher ed, is often an interesting tradeoff between the cost of production and revenue. I'm sure you can squeeze more revenue out of CS kids but the cost of production is almost certainly higher for Classics kids.

Which might explain why the classics are going away as available degree programs whereas CS generally only expands over long term.