This may appear flippant but its insightful in that sometimes the reason is non-technical and not anyone's fault.
In the mega-corporate IT world you have supported locked down apps and best effort apps (and banned apps but thats not relevant to this discussion)
Officially FF is locked down to hell and back and I can't customize it in any way or install ad blockers or web development tools in any way. HOWEVER being locked down the IT support personnel can officially walk users thru using the corporate intranet or the medical insurance site or whatever without any weird "peoplesoft doesn't work, I didn't think it important to mention I installed an adblocker or javascript blocker and fifteen toolbars and ...". Support isn't happening without it being locked down to the point of uselessness.
Meanwhile chrome is on the tolerated but not locked down list and I can install ad blockers and development tools all I want but if it doesn't work then IT support has a written policy to not give a F. They're not actively blocking it, deleting it, or locking it down, but they are not actively supporting it at all. If some obscure IT supported something-as-a-service doesn't work with Chrome, they autoclose the ticket officially. Unofficially they're not total jerks, of course, so they'd fix it, just officially Chrome doesn't exist.
So take a wild guess which one I use at work... I can't imagine using the internet without an adblocker, can't install one, or anything, on FF, so ...
In the mega-corporate IT world you have supported locked down apps and best effort apps (and banned apps but thats not relevant to this discussion)
Officially FF is locked down to hell and back and I can't customize it in any way or install ad blockers or web development tools in any way. HOWEVER being locked down the IT support personnel can officially walk users thru using the corporate intranet or the medical insurance site or whatever without any weird "peoplesoft doesn't work, I didn't think it important to mention I installed an adblocker or javascript blocker and fifteen toolbars and ...". Support isn't happening without it being locked down to the point of uselessness.
Meanwhile chrome is on the tolerated but not locked down list and I can install ad blockers and development tools all I want but if it doesn't work then IT support has a written policy to not give a F. They're not actively blocking it, deleting it, or locking it down, but they are not actively supporting it at all. If some obscure IT supported something-as-a-service doesn't work with Chrome, they autoclose the ticket officially. Unofficially they're not total jerks, of course, so they'd fix it, just officially Chrome doesn't exist.
So take a wild guess which one I use at work... I can't imagine using the internet without an adblocker, can't install one, or anything, on FF, so ...