Wy don't we have already mainframe class operating systems, interconnects and high level language abstractions on top of Open RISC-V ISA designs?
What is a fricking #MainFrame system? It's a very specific ISA, implemented in a so many Virtual Machine Layers .. heck they even call themselves #LPARs (Logical Partitions). That it is nowadays run on a _bunch_ of different processors... All just coded down to give the optimum peak performance for decades old layers of code, whlie guaranteeing every single transaction.
Heck we develop RISC-V for rad hardnened stuff already, creating a quorum of several cores to make sure there is no error...
When will we enter the real space of big calculations and big transactions finally? ;)