Demand for skilled IT professionals has been increasing at an exponential rate for as long as companies have been using IT to run their business (which is over 50 years now, going all the way way back to the 1970s when businesses were investing in huge mainframe systems). The constant feature of IT jobs is that everything changes all the time, and the skills which people need to be able to stay relevant is constantly evolving. The key is always to not allow yourself to stagnate.
For example, 10 years ago there were a lot of web developers who would be innundated with work about hacking together HTML, CSS and JavaScript to create websites; however these days anyone can build really sophisticated websites just using Wordpress/Wix/etc without needing to know any of that. Yet there won't be many unemployed web developers out there because most of them learned new tools like Angular and React for building web apps instead.
Similarly, infrastructure engineers were primarily concerned with physical servers and needed to be experts at securing and configuring operating systems running directly on real hardware back in 2009. These days the cloud has taken over and infrastructure engineers are using a whole different set of tools from cloud providers like Amazon/Google/Microsoft. Again, there won't be many unemployed infrastructure engineers because most of them will have put the time into learning cloud computing, or will be able to make the leap within 3-6 months if they switch jobs.
There's also other areas which didn't really exist or have as much prominence 10 years ago; for example, in 2009 there weren't really many jobs out there called "Cybersecurity analyst" or "Data Scientist" or "DevOps engineer" -- these are all relatively new branches of IT which have emerged as a result of new trends and changes in technology. I'm sure that Data Scientists will be doing totally different things in 10 years time than they do now, but most of them will probably be pushed by their employers to learn new tools and stay up-to-date.