It doesn't really. Modern diy culture is ultimately about publishing. That is what puts you on somewhat equal footing with a large entity. What we mostly have with 3d printing is a do-it-for-yourself culture. That is why every institution will have an exclusive maker space, where you will get reprimanded if you use too much machine time. Why people dump things on github without documentation for their resume. And why the hacker news thread on the raspberry pi is about what people are using rather than what they have created.
A keyboard is a very basic object. It is almost like the hello world of hardware. Despite this it is very challenging to produce and publish one [0][1], or something like one [2]. But these stories mostly fall of deaf ears as this important part of diy culture has become marginalized.
[0] https://blog.keyboard.io/post/181333242149/december-2018-a-s... [1] https://ultimatehackingkeyboard.com/blog/ [2] http://www.tlalexander.com/business/