> They can do whatever they want with 0 compatibility or backward compatibility. Apple put in quite a bit of effort to make sure x86 binaries still run the ARM

> They can do whatever they want with 0 compatibility or backward compatibility. Apple put in quite a bit of effort to make sure x86 binaries still run the ARM Macs. It works for 99.5% of things in my experience. They have even been observed putting in compatibility tweaks for specific applications. Also fun fact: The x86 compatibility software, Rosetta, isn’t distributed with macOS and has to be downloaded once it’s needed. This is likely Apple hedging their bets against possible future patent claims.