One major issue is system management:

Installing another app, such as Signal, on your personal computer is one thing. On 1,000 or 10,000 or 100,000 computers, installing it, configuring it, changing settings, updating it, backing it up, locking down settings from user changes (such as retention) - all that requires special tools to do it efficiently at scale. Without the management tools, no way that bit of IT can be used.

The most common tool by far is Microsoft's Active Directory and Group Policy, which has the best compatibility with Windows and with Microsoft applications, including Office. If AD/GP is already deployed, imagine the burden of deploying a second tool to your 1K/10K/100K computers, setting up the server, learning to use it ... you're not doing that for one application unless it's very valuable. The exception is a tool bundled with the application for its own management, but that's going to have to be efficient to deploy, learn, and use to be worthwhile.

Therefore, for many organizations, any application must be effectively managed by AD/GP, which requires the application's developer to create AD/GP management components.

Do Matrix, Signal, or any other application have system management tools?