What are some good ideas in consumer crypto that didn't work because they were ahead of their time (not because they were fundamentally wrong)?

I'll start: TCRs for curation (across verticals)

investing & writing about consumer tech since 2016. FID #30. hosting /web2web3 

https://www.lisnewsletter.com/

Social tokens
Prediction markets
Steemit
Stepn

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Not sure "now" is right tbh due to regulatory.

But the early Gnosis/Augur attempts were definitely ahead of their time.

Prediction markets are still kind of the white whale of crypto use cases.

What's the why now for prediction markets?