One must wonder after seeing that ARM is taking over INTEL CPU market, what will be the IP or technology that will risk ARM domination? in other word, if ARM is the “intel killer” what is (or who is) the ARM killer?
The open source RISC-V architecture is gathering some interest (https://riscv.org/)
For using ARM architecture, ARM charges a license fee in addition to the royalty if their IP is also used.
If the open source RISC-V architecture gets momentum (and for that a lot will depend on how Software ecosystem will grow for same), there could be some threat to ARM.
Read following article for more insights