Everyone hailed Minitel in the 1980s. It was touted as an example of what gov't should do (these were also the days of Japan, Inc. kicking everyone's ass, also showing what gov't "should" do for industry). Yet along came the Black Swan of the Internet to slay it. Central planning never works.
Wasn't "the internet" created by the gouvernment too?
But if you ignore the arguments about who funded what there are lots of aspects of Minitel that are interesting because it helped to kick off the wide use of smart cards, the underlying network was packet switched (X.25) and the servers handling Minitel were distributed through the network (so service providers ran their own services).
It wouldn't view Minitel as a failure, however, just because it was replaced by the web. The French were years (probably 10) ahead of the rest of the world in terms of electronic communication and commerce. They had a large internal market online in the 1980s handling a huge amount of commerce.