I cannot help but think products like DB2 and AS/400 (i Series/IBM i) are intentionally not promoted by IBM - they concentrate all marketing resources onto the next hype and view these reliable workhorses as a burden.
If anything, IBM Cloud should be used as an onboarding tool for their most profitable platforms.
And, if not even IBM can run your workloads on any of these platforms cost-effectively, why should you invest in their hardware and software stacks?
or pure profit center?