Instead software development would just become a tool anybody could use in their own specific domain. For instance if a manager needs some employee scheduling software, they would simply describe their exact needs and have software customized exactly to their needs, with a UI that fits their preference, ready to go in no time, instead of finding some SaaS that probably doesn't fit exactly what they want, learning how to use it, jumping through a million hoops, dealing with updates you don't like, and then paying a perpetual rent on top of all of this.