Nxt didn't fail to deliver. There is the multigateway. It's still beta but working. Has quite a lot of volume for being beta. In the next days/weeks multigateway will upgrade to production servers and as time passes there will be added more and more servers such that the multigateway is getting more and more decentralised. At the moment there are 3 server used, if I'm right.
I'm not that familiar with multigateway (but I used it twice and it actually worked), so if you're interested in more technical details please visit: https://nxtforum.org/multigateway-jl777/.
That's the volume of the BTC/NXT gateway: http://nxtreporting.com/?as=4551058913252105307