A response would require a level of cooperation that hasn't really worked in the past. Recall back to the days of PowerPC. Apple was going to be but one vendor and MacOS just one option. We saw CHRP, and Macs adopting PCI, SATA, and other PC standards. There were of course, the clones licensing Mac OS from different vendors. Unfortunately, it fizzled, Steve canceled licensing upon his return, and Apple wound up going to Intel a decade later.
You would need buy-in from the CPU makers. They would need to agree on a common ISA. They would also need to agree on specific components to put in the chips. Part of the reason M1 does so well at video editing is because there is hardware acceleration for encoding/decoding different formats. Likewise, there is the Neural Engine, so macOS devs can start targeting that as well. But Intel, AMD, MediaTek, Nvidia, etc. would need to agree upon a baseline feature set, and be willing to share potential improvements with competitors to avoid fragmentation.
Then, you'd need MS, Red Hat, Canonical, Oracle, etc. to agree to support new features and provide frameworks and APIs for third-party devs.
All of that so that third-party developers have a way of utilizing the improvements without too much fuss.
Apple wasn't able to make it work a few decades past. I'm not sure it would be possible now, especially not with the way Nvidia tends to do business - but that could change?
RISC-V is a neat academic exercise, but we're still a decade or so away from competing with current chips.