Once you parse the marketing speak, looks like there may be ARM ISA silicon in future System Z. But, what are their legacy finance-sector customers asking for

Once you parse the marketing speak, looks like there may be ARM ISA silicon in future System Z. But, what are their legacy finance-sector customers asking for here? Are they trying to add ARM to LinuxONE, while maintaining the IBM hardware-based nine nines uptime strategy/sweet support contract paradigm? If so, why don't the Visas of the world just buy 0xide, for example? > develop new dual‑architecture hardware that helps enterprises run future AI and data intensive workloads with greater flexibility, reliability, and security. > "This moment marks the latest step in our innovation journey for future generations of our IBM Z and LinuxONE systems, reinforcing our end-to-end system design as a powerful advantage."