I work at a place with lots of rules around what can and can’t be used. When someone new start we end up spending a lot of time policing to make sure they aren’t using stuff they should be.
A very basic example were the interns who constantly tried to use Google Docs for everything, their personal accounts no less. I had to stop them and point them back to MS Office at least a dozen times.
In other situations, people will try and use free tools that don’t scale well, because that’s what they used in college or as a hobby. It can take a lot of work to point them to the enterprise solution that is already approved and integrated with everything. A basic example of this would be someone using Ansible from their laptop when we have Ansible Automation Platform, which is better optimized for running jobs around the globe and automatically logs to Splunk to create an audit trail.