Can't believe HBS Online is doing the same thing as indie bloggers

The Harvard Business School Online brought in 68 Million USD last year with their online courses priced at 1700 to 2500 USD. Plus they are writing SEO driven articles like this (https://online.hbs.edu/blog/post/business-skills-every-professional-needs) just like any bloggers would do but because they are Harvard so their articles got the domain authority to rank really high. And there are lots of these types of articles out there, from many universities.

Is it normally amongst universities to provide online courses outside their core full-time offerings? Who runs these programs and do they work with an outside company to do the actual work?