Very difficult with large IT departments to get something unusual like this since you need hardware, a way to transfer data from your main database into an SSD to really take advantage of kdb+. Doing that would step on the toes of several departments and would require a large project to happen. Then you have the problem where many people aren't array language savvy. If kOS had a better way to build real time dashboards I would pay more attention. I really wish I could get a personal setup at work to do this (on the cheap), but classic IT really hates things outside their cotrol.
The author of that article has a very biased view tho'. An organisation that finds a lot of shadow IT happening probably ought to replace the head of the IT department since he or she is clearly not delivering what the users actually need.
From the link: Shadow IT can act as a brake on the adoption of new technology
IT should exist to help the domain users, but after a point they get too big and start to dictate what gets used even if nobody wants it. Like choosing the data analytics technology for the data analytics team when it is what they don't want/need. So then your data analytics team eventually goes outside budget to get what they actually wanted and you have two products. Very dysfunctional and common.
My IT department got suuuuuper confused just by the "db" in "kdb". It's a database! That means it must have roles and schemas and basically be a clone of Oracle! Here, fill out these 5,000 pages of paperwork!