Modern formulations are proprietary and almost certainly require a cleanroom, but the basic concept has existed for a century. I'd assume there's a history out there beyond what little Wikipedia offers.
Would I be able to DIY a tape that could store tens of megabytes of data, at least?
Edit: This adjacent wiki might have more to say on it, based on the reply I got. I assume digital data amounts to a much higher frequency of recording, though.
I do know audio cassette tapes were used repurposed for digital storage in the early PC era. Was there a noticeable difference based on quality and type of tape?
I don't know, the thing about the internet is that it does bring a ton of value, and operating it does have costs in turn. Maybe Sir Tim is right about DNS being the point where it got commercial, but it was going to happen somehow. Arxiv and Wikipedia still exist, but how do you do Amazon non-commercially? Even YouTube is a challenge.
Arguably, that's not the distinction. Technologies can be explicitly of control or of chaos. And then that relative structure or freedom can itself be used for good or for evil.
A central platform is of control, Lemmy or Linux is of chaos. And obviously we lean towards the latter a lot, but for some things, even Lemmy wants central control and monitoring, so it's not evil, exactly.