Linux, they want to be able to put Linux on it without sacrificing any performance or battery life. You can put Linux on it (Asahi Linux) but it will likely never be as performant and efficient as macOS solely because the teams at apple work incredibly well together, they know the system inside and out, they know what its capable of running at and how far it can be pushed or how much can be placed on the efficiency cores etc.
That and many pieces of open-source software are only available for Windows and Linux (and maybe FreeBSD). It’s not uncommon for developers to not want to pay the Apple Tax to port their app across, and it’s also not uncommon for Apple users to pay for proprietary apps that have open-source equivalents on other OSes.
What free software is it not able to run?
Linux, they want to be able to put Linux on it without sacrificing any performance or battery life. You can put Linux on it (Asahi Linux) but it will likely never be as performant and efficient as macOS solely because the teams at apple work incredibly well together, they know the system inside and out, they know what its capable of running at and how far it can be pushed or how much can be placed on the efficiency cores etc.
That and many pieces of open-source software are only available for Windows and Linux (and maybe FreeBSD). It’s not uncommon for developers to not want to pay the Apple Tax to port their app across, and it’s also not uncommon for Apple users to pay for proprietary apps that have open-source equivalents on other OSes.