In my personal experience everyone I met started with or became interested in the DIYBio movement from a place of passion and creative curiosity. The DIY aspect was attractive to me because, not everyone gets invited inside the ivory tower of academia or has access to R1 schools and labs. Just because you aren't a mechanic for a NASCAR or Formula 1 team doesn't mean you can't buy a junk car and some tools and tinker in your garage.
To me DIYBio was allowing access to "do science" outside of the normal places you do science. What you're able to learn should be delinked from age and resources, though it often isn't. Doing science is expensive. The tools are expensive, the reagents are expensive, and proper space is expensive. Over time that bleeds you dry. And yes, I know it can be done "on the cheap".
The "open" aspect of sharing went away after taking investor money in my case. And then once you can no longer live at your parents, bills start piling up to live, and hobbies generally don't pay the bills. So you grow up and get a job and have less time to tinker for the sake of it. Big props to the people that were able to make viable businesses, if even for short periods of time, in this space.
I met some amazing people in person and online from this list and still keep in touch with a number of them!