Sort:  

They've implemented plenty. Their native token is being used on their blockchain, with their native wallet. It has withstood a $20 billion bug bounty via the hostile open Internet so far. They have a long way to go, but make regular progress reports. They started from scratch, unlike many projects which were a fork from pre-existing code, so they have done a lot to get this far.

Cardano's market success was driven primarily by brilliant marketing strategy, I suspect. I have both coin/token though.

Coin Marketplace

STEEM 0.18
TRX 0.15
JST 0.029
BTC 62938.05
ETH 2552.06
USDT 1.00
SBD 2.63