Businesses rely on stable server and applications. Stable in the sense of API/ABI stable. You want an application behave exactly the same on day one and on the last day before eol of the server OS.

Arch is pure chaos and it could completely change how things work and break commercial third party apps on that server on potentially every day. And you would not necessarily notice the error until its to late and your data is corrupted.

You don’t trow money at a your server infrastructure to get redundant servers to finally be able to use Arch somewhat stable. And why should a business not use that redundancy for an LTS distro to get even more stability and safety of operations.