Specifically MVNOs would be stupid to do this since they are leasing from primary network operators (Verizon, AT&T, T-Mobile) and have to play be the rules of the contract with those companies.
Plus in OPs case Visible is owned by Verizon and Xfinity runs on Verizons network. It’s not Xfinity’s interest to piss off Verizon who could kick them off their network. That would result in less negotiating power with other networks and result in higher costs for them.
I hate to say it but company data is most definitely on personal computers.
This is why stuff like adaptive MFA and DLP are a thing. What most people don’t know is if DLP is properly implemented the IT team/department have records of who, when, where, and what device were used to not just access/download data/files.
The problem is a lot of companies don’t properly implement DLP because it’s not a turn key solution. You need to properly classify your data first and that requires essentially a company wide audit with buy-in from all levels of management. After the classifications you can then implement restrictions and compensating controls.
Back in the day you could just block USB/network transfer, but if you have data accessible outside of a corporate network you then need to implement conditional access/adaptive MFA where only registered devices are permitted to access certain systems.
That 6% attributed to “unknown” is the one true OS, the only one ordained by the Almighty… Temple OS!
Unfortunately they are already in the market and making a mess: https://www.theregister.com/2024/07/21/crowdstrike_linux_crashes_restoration_tools/