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Microsoft says “Prism” translation layer does for Arm PCs what Rosetta did for Macs
(arstechnica.com)
This is a most excellent place for technology news and articles.
RISC-V is an open standard under an open and free license. Which means that it doesn't require an expensive proprietary licensing fee. It is the necessary development bed upon which open source hardware can be created. Effectively it means that it has the potential of creating cheaper hardware that manufacturers can create with lower cost overhead and whatever improvements they make upon the designs can be used for free by other manufacturers.
While all other ISAs are proprietary standards that charge chip designers up the nose to even look at the specifications. Hence why there's so few chip manufacturers in the world.