The Galileo project, like most such projects are not vanity projects but projects to bolster the community spirit, and above all, to tie EU members in a knot which they will difficult to untie. For Eu10bn that is cheap. In fact the greater the cost with no success, the more difficult it is to withdraw from it. Therefore failure to targets is the one of the main objectives of the project.
If we assume that this is the strategy, then the Galileo project and others like it, will not finish till there is another project that can replace it.
We are not talking at cross purposes if I say it is ALSO very much a vanity project. It goes without saying that the primary purpose in more integration and to enhance the "European" sense of identity.