macOS users, kindly correct my misconceptions about the OS and the company

https://linux.community/post/650445

Updates to macOS are free; the hardware sales make that possible.

Updates to third-party apps like MS Office and Adobe are entirely at the discretion of that vendor (both of those are likely subscription-only at this point).

LibreOffice is available for macOS, yes.

I think Oracle’s VirtualBox is still free for emulation. You can also use Boot Camp to install Windows natively for dual-booting.

You can also use Boot Camp to install Windows natively for dual-booting.

On Intel-based Macs, yes. Apple silicon does not support Boot Camp.

Ah, hadn’t thought of that, good call. I buy old Macs and fix them up.
On Apple Silicon Macs, you can set up Asahi(Fedora) Linux to dual boot. Or you can you use something like Parallels as a paid alternative to bootcamp.