From the author's discussion of Node's "enterprise" popularity:

  > The visceral rejection of Node.js that you see from some quarters is often
  > the spidey-sense of an experienced enterprise developer zapping them between
  > the eyes. JavaScript? No!

The author shouldn't be so quick to chalk this uneasiness up to discomfort with JavaScript itself but rather with the perceived instability of the NPM ecosystem. While NPM is filled with high-quality libraries, each has a bird's nest of dependencies like what you see with CPAN packages. To use Node, you need to use NPM. To trust NPM, you need to trust Open Source. Until the enterprise really trusts open source, Node will never be very popular there, regardless of how heavily it is used elsewhere. PHP overcame this hurdle because you can use PHP productively with no third-party packages.

The second problem for Node to overcome is that its design requires asynchronous I/O for good performance, and you need decent developers to write good asynchronous code. While this is a real problem, I'm not sure that many decision-makers are aware of this (or would care about it) because so much "enterprise" software is dog slow and resource hungry.