Any laptop could be converted into a file server with just two commands?

I started writing code only a couple of months back. Thanks to the course by Al and AI. I stumbled onto sharing files over a local port when I discovered how Noise cancellation works and I wanted to play the same song on my phone and laptop to check if it would cancel out the sound. I was sidetracked when I was mindblown that sharing files/folders could be this easy. (You would know if you use Windows/Android).

I was low-key annoyed that everyone could be sharing files this way but we have to rely on uploading the files first through WhatsApp/Slack/Wetransfer/Gdrive and then downloading them??

In the next month or so, I built a small application for anyone to share files directly from their laptop and showed it to editors and photographers who work with large files and they're mindblown as to how easy this is.

I am excited for code to be more accessible and to see what maybe 10-20% of the world's population would build vs only a small percentage of people who currently can build.

Every senior engineer I spoke to said this is the most basic thing and yet I don't see any application that does this??

Am I the Idiot?