As others have mentioned, the audio files can be easily imported, exported and shared between different users on different DAW software on different OS. WAV files being the most common.
You won't be able to share project metadata/settings - e.g, tempo, automation, levels, pans, mutes, track names, track order, and other track attributes. etc. from Logic into any other DAW besides Logic. And Logic is Mac only.
Even if you were running the same version of Logic on your own Mac, there would be certain things that won't get carried over automatically - e.g., plug-ins, loops, etc. If you don't have the same plug-ins licensed and installed, you won't be able to initialize them when you open someone else's project. Such as: MIDI drum tracks, guitar amp sim plug ins, other instruments on MIDI tracks (that aren't part of the base Logic install).
File management is another thing. Right out of the box, if the file paths are not exact, you'll have to go through the process of remapping the file paths. That could made easier if file paths were "well set up" at the other end....e.g., not in a path like: ".../Bob's Computer/Music Stuff/Tracks/Music/Logic/Demos/2021/March/<song name>/Take 001/...".
My collaborators and I have attempted to standardize on Ardour/Ubuntu Studio....I'd say that typically 75% of a typical project loads as expected but the remaining 25% doesn't (usually related to plug-ins and file paths). That means troubleshooting plug-in installs and/or remapping file paths manually. And then there's the audio interface hardware. Any changes in hardware usually have to managed handraulically. I've spent more time remapping file paths than I have recording. Also troubleshooting issues with FLAC files, but thats another story captured in another thread!
Expecting a completely seamless 1:1 interoperability - even between two computers of the same type - is not realistic unless you have an EXACT mirror of software, plug-ins hardware and file management set up. Unless you had exacting standards for multiple users in terms of hardware, OS, DAW, plug-ins, file management, etc., you're simply out of luck. Maybe if you are a Chris Lord-Alge, you could enforce those standards. but for us run-of-the mill duffers, not realistic. Completely seamless 1:1 interoperability using different DAW software on different OS - approaches the impossible.
That's why the audio stems and mixdowns are the most common way things are shared in various stages of production...as opposed to the project itself.
