It’s a good question.

Blockchain assets derive value from their usefulness. Bitcoin has value because people value the payment network. BTC is required to use the network, so people demand it. If Bitcoin continues to be useful, it will continue to have value.

Similarly, an asset associated with a attention-based protocol derives value from its usefulness. The leading attention-based protocol right now, Steem, has value because people value attention on the Steem network. The Steem blockchain rewards people directly (determined by a weigh-based voting algorithm) and as long as there is demand for the STEEM token, one can get liquidity on that token.