Where I work, we have the concept of a "subject matter expert". This is someone that the technical people can work with, to sove problems outside the technical

Where I work, we have the concept of a "subject matter expert". This is someone that the technical people can work with, to sove problems outside the technical person's expertise. Using technology outside the SME's expertise. Why can't this idea of collaborating with outsiders work for the industry as a whole? Why must everyone be able to do everything?