To me, this is the major flaw with Solid: Why use a third party's service at all? Why should your apps and your data be on your own server? Sandstorm and Cloudr

To me, this is the major flaw with Solid: Why use a third party's service at all? Why should your apps and your data be on your own server? Sandstorm and Cloudron already do this, and make it user-friendly to install, remove, and share web apps with people from a private space. Furthermore, Sandstorm also assumes apps are malicious, so it is relatively safe to install proprietary apps on-device and still prevent data exfiltration. There are very few types of apps which truly need a third party server to work.