I could see a potential demand (beyond me) for a one-click install of Hypothesis, the open source, web annotation, highlight, and bookmarking service. It’s got a number of moving pieces and should be ideal for such a cloud-based use case and likely has a significant overlap with the customer base for Reclaim.
Main company site: https://web.hypothes.is/
GitHub repositories: Hypothesis · GitHub
Documentation for set up using docker: Installation guide — The Hypothesis Annotation Framework 0.0.2 documentation
Given what it offers, I could see people also potentially using it as a CMS, blogging platform, or social bookmarking platform: