What I've read is that the system will be free (i.e. not encrypted; the only way to stop some company making receivers for it would be encryption of some sort) but they will charge for the higher accuracy signal.
Presumably, for legal GPS approaches, they would demand that the higher accuracy signal is used.
The whole thing is bizzare. In any situation in which the Americans will shut theirs down, the European will be shut down also. It is just another project for career politicians to immortalise themselves on.