Another thing that made it possible to do this is the automation of all routine processes, such as testing and package builds. In PiKVM, the first component that was written was a build system to solve this issue once and for all. In this vein, I made a huge contribution to the "pre-launch" before flying. BTW, to be honest, I was somewhat surprised that you used Ansible instead of packages, it seems that this caused you a giant overhead for support.
Of course, in the future we plan to provide some paid services, but this does not concern the regular OS and access to updates at all, they should remain free.