Note: This is about diabetes type 2, not type 1. Might be worth to editorialize the heading in this case.
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There was a promising example in China where Scientists cured a single woman who had T1D. It's n=1, but the first step to a cure is curing someone :)
No doubt, the current T1D market players will have created some legal moat, so it might be best for the patients if these companies are the ones to bring the treatment to the market. But we shall see - the current big pharma in diabetes space is heavily invested in drug production rather than implantation procedures. It is a very different business model requiring very different facilities, management, and technology.
[0] https://www.diabetes.org.uk/our-research/get-involved/take-p...