Any non-fungible cryptocurrency with white and black lists is a permissioned ledger by default.  As I said before, the govt is going to create an alias system wrapper that goes around bitcoin and force everyone to use it by law or be considered a criminal launderer.  They will then eventually do the old switcharoo and divorce the alias system tokens away from representing bitcoin into being IMF coin or something.  It's far more likely the govt co-opts bitcoin and turns it into the cashless society slave system rather than it acting as an "on-ramp" to freedom.

It's plain as day to see what's going to happen with laws like this coming out in Japan:

"Only approved virtual currencies by the authority are considered legitimate and can be traded, sold or promoted to public"

This means govt is the legal arbitrator of forks.  The US, UK, and EU will hold a meeting and all collude saying only the fork with chain anchor or worse is the real bitcoin!  Since they can easily control the exchanges and mining pools, people will be forced to use that fork or have their coins become worthless.  The only reason bitcoin isn't illegal is because they know how easy it is to co-opt and morph it into their cashless society control grid.