In a nutshell yes. The binary argument is true as well, however many developers don't want to make their sources avaialbe which means other than going source -> some obfuscated IR -> native, thre is no way to allow the end user to run your app on any arbitrary platform.
There is. It's called fat binaries. Ryan C. Gordon was working on an ELF extension for it, but ended up quitting due to getting shit on by kernel hackers and common users alike.
