[tokipin]

As the company grows the types of people that are attracted and unattracted by the company change, as do those that are accepted and rejected by it. For example, risk averse people are attracted to mature companies, and they don't like risk takers.

One of the consequences is that companies become more specialized and lose deep expertise. To put it bluntly, its because they no longer have people with deep expertise, and even when they do they are ignored by management who tend to be less interested and knowledgeable about the subject matter.

I don't know of any company that has tried to prevent this. It's a general force that permeates everything, including recruiters, HR, their job postings, etc. So even companies that think they're preventing it probably still walk right into it regardless.

Of course, specialization is not necessarily good or bad. In a very competitive environment the company may not have a choice.