Some software development workflows require specific tooling, with complex setups. While it may be possible to do with other tools, it's often very difficult, and not really worth the trouble when there is a known working setup. It's easier to onboard new people if they use the established toolchain with known working configs. I worked at a place once where it took several days to get the dev environment set up. It would have taken far longer if someone wanted to use whatever random tool they'd prefer to use.