[Edited: typo]
The installation of any software and management of it is norhing tnew in the corporate world.
Chrome may be chrome. Chrome is not the default on windows computers in corporations. Edge usually is.
After it's installed, professionals much more now know today how to remember which icon to select and run.
All users received an orientation and were informed that Firefox is the only approved browser.
Firefox was pinned to the desktop and taskbar, usually with the name "INTERNET" as the web browser is commonly known here.
The number of support tickets was very small. Usually if a user reported a problem with the web browser, it was a page that was also broken in Chrome or some other network issue.
Users reacted positively when they saw that there are no ads in Firefox. uBlock Origin was preinstalled.
Without ads and tracking scripts the web browser is massively faster, which also was perceived by users.
If there is any initial resistance to Firefox, it usually melts quickly.
The only bother has been the frequent UI updates to Firefox, which occasionally cause frustration until we apply a new configuration to revert whatever fresh horrors Firefox designers have birthed. With ESR, these problems are less frequent.
I hope this Firefox Enterprise freezes the UI to the classic "tabs look like tabs" aesthetic, maintaining the option of vertical tabs.
One feeling I am starting to get is server side web apps might make more of a re-emergence, because putting so much application and business logic in the front end serves as a bigger footprint for possible security issues.
With respect to resistance to browsers (or preference for something else), I agree that users seek familiarity and those who got to start with Firefox do still remember it.
Mozilla is just one org, but it's relative independence will hopefully provide other perspectives to using a web browser as a universal interface, not just for humans, but our new sentence-dna containing friends.
I remember one place simply changed the icon and watched the issues drop.
People really can be creatures of habit.
Some enterprises i've seen put in their own icon for a web browser (imagine starting with an intranet) and that helps separate it a bit more.
This might not be for everyone, nor ideal in all cases but people seemed to be OK with the idea of having a dashboard to launch their work from.
My anec-data on the subject seems to imply it affects a very specific segment of people: The "I only use a (usually Windows) computer at work" folks. The odd part of that is that almost all of them seem to own iPhones or iPads (specifically not Android devices) and since they use these devices, exclusively, outside of work and one can assume they're probably opening Safari for browsing, why do they have such a strong association that Chrome must be "the browser." This segment, though, seems to make up a large majority of "knowledge workers" outside of IT.
Now, like probably a lot of us here, I'm the tech support for everyone who knows I "play with computers professionally." One of the first things I do is remove the Chrome and Edge icon from the task bar[0] and add Firefox with a small set of extensions that generally keep me from having to revisit them due to malware. I usually just tell them "The button you use to get on the Internet changed but it's the same." ... and Bob's your uncle. I return a year later, the same Firefox icon is in the same place, updated several versions and all is well. They all vaguely knew they were using something different before, some knew it was called Chrome or Edge, but "the icon changed" is all I've had to say for probably a decade since the two browsers' core functionality is close enough that they generally cover every site the older generation would be expected to visit.
It feels like a variation of "they've got enough knowledge to be dangerous."
[0] I don't think I've ever seen my parents, aunts/uncles, extended older family every try to find a program through that menu that pops up when you click the button that used to be called the "Start" button. :)
I think it's a status play, for people who have been convinced that status is tantamount to utility. If you lower yourself to options that aren't well-known to be high status, or at least known - particularly ones that require tinkering of any sort - you are wasting time, and worse, you are signalling to other people that you're a time-waster, that your time isn't valuable, and that your choice to waste time rather than use the default or high-status option shows that you have a defect in judgment.
They lost fierefox a few months ago due to new compamy policy and with it lost access to some apps when working from home. We know it is related to the proxy config but company is so big and processes are such a mess nobody knows who should be contacted and by which email alias or service now ticket.
The internet explorer/edge issues were due to a web browser that was built into the operating system, and owned by the operating system company (Microsoft in this case).
There was a popular trend for a while that IE was the windows feature that let you download a different browser.
Apple had a similar run with Safari and from what I recall had to change.
Mozilla might have anticipated this when they wrote "Diversify your browser engine" as one of the selling points.
https://www.firefox.com/en-US/enterprise/firefox-enterprise/...
Diversification is a good idea, personally I use both Chrome and Firefox every day (and sometimes Lynx).