So the user can be like "I no longer want to work with LightSpark", and they can take their toys and go home, right? And then there would need to be an independent client, not controlled by LightSpark, that doesn't make network connections to any domains controlled by the Marcus family, and you could use that client to do the exit, right? That does sound fairly good. It doesn't deal with the "LightSpark can track all my transactions and might give them all to some government on request" -- but as long as LightSpark front ends disclose this prominently -- that Spark transactions aren't private -- then that's not really a dealbreaker for most users.