Which makes sense in their domain. If you look at the skills they actually care about: software development/programming, user interface design, managing softwa

Which makes sense in their domain. If you look at the skills they actually care about: software development/programming, user interface design, managing software teams, software testing using scripting/programming tools, marketing software, selling software, system administration. A PhD would (likely) only have done development-programming and testing -- and only (at best) about half-time, since so much of their other responsibilities are coursework, writing, teaching, etc.