I work in enterprise software as well and unless the UX/features of an app is critical, you are spot on. On the product I work on, one of the major GUI client

I work in enterprise software as well and unless the UX/features of an app is critical, you are spot on. On the product I work on, one of the major GUI client is heavily used by power users with direct decision factor on the deals. It gets a lot of effort and polish and IxD folks go to client sites and maintain a feedback loop. Other parts of the app are meant to be used by, well, "lesser" users (from a sales PoV) and get less IxD time/effort. It's all very rational.