alt Hacker NewsThere are a lot of little cores in phones doing little core things. Having a first rate design team experienced in an ISA that is royalty free probably makes sense. They'll be able to expand the use of RISCV up the value chain ver time.
Buying a team that's already working on RISCV also reduces the chances of ARM lawyers getting involved.
Why would you acquire massive out-of-order super fast CPU team if you wanted a bunch of small cores. There are much cheaper teams and cores you could use for that.