I think the reason big companies will ask more often for a degree is that they are more risk averse. More exactly the people working there are more risk averse

I think the reason big companies will ask more often for a degree is that they are more risk averse. More exactly the people working there are more risk averse and hiring someone without a degree would require some explanation since it's not common practice. Also people sometimes need to hire for roles they don't know much about and having a degree provides some kind of assurance about the candidate's knowledge. It's true you can be better at doing your work without a degree but the article makes it sound like it's a bonus, which is not, at least to my eyes. BigCo doesn't care that you are going to stay there for years, most probably it would prefer higher rotation rates.