With an illustrator's skill set, you may have a role in IT in user interface design for a software company, or in diagramming technical layouts for networking and hardware based systems. Both of those are things that AI probably isn't going to be able to replicate since they require non-image inputs, i.e. text systems.

Going back to school is scary, but it can be worth it. I had a "worthless" undergraduate degree (English....) and tacked on a master's degree in business technology. I worked part time in a Managed Service Provider (MSP) first as a network technician, then as their junior systems administrator, while I was getting my degree. I landed a job first as a general IT analyst, and now as a business analyst for a software team.

Ironically, I spent the last two months..... in Photoshop. Making new icons for our software as part of a user interface refresh. I was the only person on the team with any kind of art training whatsoever, so.....