Should information technology be a stable employment sector?

As far as I'm concerned, the main purpose of IT is to automate work. Tech companies make these systems of automation and provide them to other industries, so they can automate.

Making a program or an IT system is something you only do once. So once it is completed, it is expected that a lot of people who helped make it have to go. It's like building a skyscraper. Massive amounts of work to build it, and when it's finished, most workers have to move on.

Of course an IT company can continue to expand into perpetuity, but what if they don't have the leadership talent or resources to create a new giant project after one has been finished? Then the sensible thing is to down-size.

"Well don't hire too many people in the first place to rush your project into completion" - Then you get left behind.

There is churn in the work being done. An automation solution for one company shouldn't be expected to work for the next company. Every company has different processes, and developing software to fit the exact needs of one company will continue to be useful.

Some software is finished, like Microsoft Office 2003, and requires no additional work except to force ads on people. Those jobs may end.