A number of years ago Matthew made it so that any failed system could be viewed even if it was killed and/or no longer accepted any subscribers. That no longer seems to be the case!
Here is the old system: https://collective2.com/system90325769
which displays a blank screen with the message: “System not accepting new subscribers”, “This system is currently not allowing any new subscribers and thus is not visible to the public.”
Here is the new system: https://collective2.com/system99007414
which hasn’t blown up yet and will gladly accept $350 per month from anyone who thinks the new and improved version will have a better chance for success (if they could even ever know about the old system which is no longer shown in the vendor’s list of visible systems!).