mainframes can run rhel vms which are basically standard rhel installs that you assign RAM/CPU/storage to, with the benefits of mainframe hardware (eg. massive

mainframes can run rhel vms which are basically standard rhel installs that you assign RAM/CPU/storage to, with the benefits of mainframe hardware (eg. massive I/O bandwidth) so you can be happy with your mainframe because you are running rhel on it :) But realistically mainframes are a small part of IBMs business so there are lots of reasons for IBM to buy Red Hat that are entirely unrelated to mainframes or POWER hardware