It was common in the early 2000s for big companies to have large internal IT teams to build "line of business" apps. Then SaaS came along and delivered LoB apps for a fraction of the price and with a monthly subscription.
Looks like we're headed back to the internal IT days of building customized LoB apps.
Or perhaps there will arise a new kind of external service provider that delivers customized SaaS services to those same users, using AI. There's no reason the work has to go back to the internal IT people who were fired long ago.