The idea of the OpenPower thing is that you are no more locked in than you are on x86, perhaps not quite as open as arm64 but it's pretty nice in theory.
Also, I have a major sad for our industry when people struggle so much with alternative architectures. Tons of software absolutely should not care including JVM languages, scripting languages, Golang. Most userland compiled languages should also minimally care. For lower level C stuff, regular compilation on non-x86 archs is often directly reflected on overall code quality (new compiler warnings, things like alignment correctness, cache/memory coherency model assumptions, data type assumptions, etc). It is somewhat hard to port operating systems and "efficiency libraries" that invoke platform features, but it also takes a comparatively small number of people to do.
Also, I have a major sad for our industry when people struggle so much with alternative architectures. Tons of software absolutely should not care including JVM languages, scripting languages, Golang. Most userland compiled languages should also minimally care. For lower level C stuff, regular compilation on non-x86 archs is often directly reflected on overall code quality (new compiler warnings, things like alignment correctness, cache/memory coherency model assumptions, data type assumptions, etc). It is somewhat hard to port operating systems and "efficiency libraries" that invoke platform features, but it also takes a comparatively small number of people to do.