No need for hair salon jobs in the future. We will automate that job away. It will not be possible to hire ANYBODY AT ALL for a hair salon. We are taking care of this. One more job destroyed = one more billion in my pocket.
The real skill is the skill to destroy other people's jobs. The only ones who can do that, are programmers. All these "other professions" only stay alive by mercy of us not having enough time to destroy their job. This afternoon, I will finally have more time. Then, I will fire up my other laptop and destroy one more job. All of you will be replaced by my software, and you will be unemployed henceforth.
If we work hard enough, in IT, we automate away your particular job, whatever that may be that you are doing with your PhD. So, a program replaces you. So, you don't get paid out your salary and you join the ranks of starving PhDs. Furthermore, we do this every day, as a matter of routine. We make truck loads of money automating away jobs like yours. So, do not draw our attention to your field, because we may re-prioritize the list of jobs to be destroyed, and pick your job from the list, first.
Being someone else's employee is a dead-end job after 35-40. It has nothing to do with software development. The easiest way to counter that, is to at least engage in subcontracting. But then again, the whole idea of selling your hours to someone else is in itself a long-term dead-end strategy. Instead, build a platform and sell something else than your own hours on it. That is what your employer is doing anyway. So, why not do it yourself too?