The available jobs aren't the problem. It's the qualifications to do those jobs. There is also, depending on how you count it and finagle the numbers, somewhere between 10% and 15% unemployment. Why can't we match those unemployed folks with the open jobs, and voilà, no open jobs, no unemployment? That's not going to happen any time soon. The vast majority of unemployed individuals in North America simply don't have the skills we need to work in the process automation field.
Because you're reading this, you probably aren't one of those unskilled unemployed. That's good, provided you recognize that 30 years ago, there were many more jobs open in manufacturing for lesser-skilled people than there are now. Thirty years hence, or even 10 years from now, the skills required to do the job you have will change, and become greater than the skills that you have right now.