This is a great question, and the answer is that universities serve their own institutional needs, not those of business, or of society, or even of students. I remember the shock when I was in college trying to learn Japanese and I asked why, after the first couple of years of language, all the Japanese classes switched to literature or obscure linguistics. I told them that I wanted classes in advanced language that would teach me how to live and work at a professional level in Japan: present in a business meeting, read a contract, etc. I claimed that going from basic language to advanced, modern, professional Japanese was a lot higher priority than a switch to archaic, literary Japanese or obscure linguistic analysis. They reacted with outrage, claiming that if they were to do what I was suggesting, they "wouldn't have any academic credibility at all!"

Ah, that's what it's about. Not my needs but theirs: not real-world skill but academic credibility.

Of course it would be what I needed if, and only if, I intended to become an academic in the field myself, but that is what universities are---farm leagues for finding and developing future professors.

Since professors are only a small portion of the work force, most people weren't even supposed to attend universities. Most people were supposed to enroll in other educational programs (tech schools, art/cooking/etc. academies, apprenticeships, and so on) if they intended to work for a living.

But these days, no employer wants you without a university degree, so universities can go on serving themselves and you'll pay for it anyway, because the end for non-professors is a general purpose "degree" credential that employers use as a proxy for generic employment qualification.

I'm not saying that computer science isn't important, just that it is a higher priority for academia than for business, and academia serves academia.