What do you mean with "failed to deliver"? The lack of light clients etc.?
I am saying of the complete product since it has been so long the project started and the talk to the project is pretty much absent in the market.
I think markets were for trading, not for talking

(I know what you mean ... no NMC in pump and dump groups at Twitter, Telegram, Whatsapp etc. ... but I see this as a positive aspect

).
Ya. NMC has advantage over other project in this prospect. The other serious competitor is Blockstack. I am not such a tech guy to understand small details on the project, but it has late-mover advantage.
From what I read
here, the consensus system of Namecoin is more trustless than Blockstack's, and there are many things I don't like at Blockstack (not really censorship-proof, patented ...
read here why I consider this a bad idea)