[Telaneo]

The closest I've seen is 'send file over message service or e-mail', but this has a decently low maximum file size.

The alternative for larger files is Dropbox or Google Drive or similar and share a link, but there are limits to how full you can have those be, so sending a 5 GB file might be inconvenient if you don't pay for the upgraded service.

For anything larger than that again, I don't think I would do anything than pass a physical flash drive, since there's nothing else that has a lower barrier of entry and I can rely on a random person to be able to use and understand.

[MiddleEndian]

I have upgraded dropbox and google accounts and also a VPS, so it wouldn't be hard for me. But for people who aren't big fucking nerds, nothing exists that's as easy as that. Email's limit is crazy low.