As someone in the industry as well for many years (coming from the business side having ventured into software), the main problem is always that the software just is not good enough and do not account for all the edge cases - leaving many users better off using pumped up Excel sheets combined with a few hours on the phone every day to account for all the nuances and changing customers/suppliers demands.
In short: It is not good enough. When it is good enough, customers adopt it.
In short: It is not good enough. When it is good enough, customers adopt it.