It's not about having the means, it's about most companies having policies and processes structured around common software used by all employees in a similar position to allow for collaboration, and to ensure compliance with whatever governance and licenses apply. You don't see orgs where some devs can choose GitHub, others GitLab. IDEs are more interchangeable, of course, but each developer having to set up their own config from scratch (correct plugins, build config, testing framework, etc.) would be a colossal waste of time for no reason.

Some bigger orgs allow flexibility (devs can pick Mac or Linux-based laptops, VS Code or JetBrains as the IDE, etc.), but not bring your own with your own license.