Why is there no on-chain Linkedin competitor?

But no one even willing to try? cf farcaster

Also the avg connection between nodes is super weak 

Over 70% of my connections I haven’t spoken to in years if at all

I'm waiting for the on-chain Ebay competitor. The commerce component makes it a no-brainer!

The open professional network where you meet exceptional people • Casting in /icebreaker • Get started at icebreaker.xyz

@icebreaker seems kinda relevant here but idk if this their intended usecase

http://link3.to is the trusted gateway to web3 organizations and creators. 

We are building one! Stay tuned for @link3to

Not knocking the idea, but how would something like that differentiate? What problem would being onchain solve?