How can you possibly say this "is a success"? It's been a disaster.
The platform is targeted towards developers and now that it is live all the developers that were waiting for the mainnet to go live to test their apps have hit the ground running. The only people having trouble are the non-developers that are trying to use the web wallet to trade Lisk instead of develop with it, and yes on that front the Lisk team could have prepared better and at least set up a load balancer to intelligently distribute the traffic. Seeing as how it is live and developers can easily set it up and don't have to deal with the mess that is writing ETH smart contracts, yes it is very much a success.
A launch that is such that the early people who bought into the project can't get what the paid for. ....yeah, that's the opposite of success.
It may not be a complete failure, I'll concede that. ...but it's certainly no success.