I work in the space, and back in 2018 the FDA was communicating very clearly that they wanted to see someone make a closed loop artificial pancreas. They do go

I work in the space, and back in 2018 the FDA was communicating very clearly that they wanted to see someone make a closed loop artificial pancreas. They do go a little easier on companies that are developing the new stuff they want. But I suspect the bigger companies didn't want to touch it because it's inherently risky: any minor bug or glitch can literally kill children any you could lose the whole company. It's awesome that the DIY / hacker / open source folks were able to step up to the opportunity and build this great think, but it is all very much proceed-at-your-own-risk: there's nobody with a big pile of cash to sue if you or your loved ones get hurt. I'd love to see more of these sorts of trailblazing initiatives in the future, and it's tremendously encouraging that the FDA is apparently open to this as well.