The trouble with Randall and his ilk is that, although they are basically "on side", they have never really got to grips with the nature of the EU and its true (and only) agenda—political integration.
In that context, the postal services directives have exactly the same agenda as all the other so-called "liberalising" instruments, whether they are dealing with energy (see here), rail services, telecommunications, or whatever. The intent is to break up national monopolies, not for the sake of it, but in order to recreate then on a European level, under the direct control of the EU commission.
Thus, the attack on national monopolies is not an attack on the monopolies, per se but an attack on nationalism—it is an attack on the nation state, an attempt to reduce the power and influence of the member states. As such, the EU has no rooted objection to monopolies – it is, after all, itself a monopoly. Its apparent enthusiasm for "competition" is simply a smokescreen to gull free-market liberals into supporting its deeper agenda.
However, the great genius of the commission—as I have been wont to observe—is its realisation that it is no longer necessary to nationalise something in order to own it. Basically, it has developed a system of nationalisation by regulation. It you have complete control over an industry, you get all the benefits of ownership without needing the title deeds.
Before it can build its European dream the EU must first destroy what exists. We are in the destruction phase. For sure, we must not allow it to happen, but "we" are no longer in control.
And there you have it, ladies and gentlemen: the reason why I am not in favour of the EU's forced "liberalisation".
It is also interesting to note that the "destroy in order to create" mantra was always a big favourite of Communists and other hard-left factions. But, actually, it is fascism that the EU's approach more closely resembles: a totalitarian government using large corporations—state-sponsored corporatism, in other words—in order to carry out its missions is very much a mark of fascist regimes.