LinkedIn for Real Estate?

[Kyle Soudalan]

Today I learned that there is a "LinkedIn for Physicians" and other medical professionals: https://www.doximity.com/

Really successful company that apparently has over 80% of all physicians in the US in their network.

Why do you think this doesn't exist for Real Estate? Meaning, a separate platform for facilitating regular networking and deal flow for real estate professionals (investor <--> property manager <--> contractor <--> etc.) who are constantly trying to find leads for different services.
It feels like Q&A / blog platforms are outdated, harder to organize / search, doesn't provide ample analytics data for individual users, and is very hit or miss (particularly because real estate is so local, so it's tough on these platforms to constrain things to specific markets).