Intel and AMD both have rights to x86_64, since they both held patents used by it. In 2021, AMD’s patents expired.
Then there’s ARM, which is solely owned by Arm Holdings.
But yes, it’s still very much a big problem, and I really hope RISC-V succeeds to solve that problem. Licensing core designs is a much better motive and business model than licensing an entire ISA.
Edit: oh wait, you said two architectures, not two companies. Never mind, you’re right. :)
Well, kind of 3 companies.
Intel and AMD both have rights to x86_64, since they both held patents used by it. In 2021, AMD’s patents expired.
Then there’s ARM, which is solely owned by Arm Holdings.
But yes, it’s still very much a big problem, and I really hope RISC-V succeeds to solve that problem. Licensing core designs is a much better motive and business model than licensing an entire ISA.
Edit: oh wait, you said two architectures, not two companies. Never mind, you’re right. :)