Not sure, but if Nvidia can just use RV (R5?) now instead of ARM, why waste money to buy ARM then? The advantage to them I guess would be to form a monopoly, so the acquisition will surely not be allowed.

If it were a ruse I don't see how such a ruse benefits RISC-V... perhaps fear of Nvidia owning ARM will drive others towards RISC-V, but that benefits Nvidia how? Better free designs?