Managing browsers - portals to almost every use and risk - is a PITA and I don't trust Chrome for confidentiality of data or users. Access to actual Mozilla personnel (engineers?) would be a big differentiator. But I wonder about a couple of things:
1) What are Edge and Safari management like? Are they competition here? If IT wants to move off Chrome to a management-friendly browser, the first thought would be the platform's native browsers which might integrate easily with native management.
2) How well does Firefox's management solution work? One-off management solutions for single applications have a bad history: They are often buggy, poorly designed (how much is Mozilla investing in UI design for this small number of users), complicated to learn, deploy (is this some sort of client-server? require another app client-side?), operate (what about WAN users? intermittent connections?), have poor features (multiple profiles? per-user or per-device? multiple users per device and multiple devices per user? group management? integration with other directory services - or do they reinvent the wheel and I need to input every update in multiple applications? multiple platforms? mobile apps?), manage (the management app needs management), etc. Does it reliably autodeploy or do I need to manually do something for each of my 10,000 users? Again, how much will Mozilla invest in this small group of users, the IT admins? I already have Microsoft's / Apple's native platform management solutions and those are enough of a headache.
I'd advise Mozilla to make it a delight for IT admins - immediately remove their fears of an additional headache in their busy days - and they will jump right in. As long as it works, I don't think users would care. Everyone, users and admins, is too busy.