I rarely even need to communicate with my cleaners at all since it syncs with my calendar and automates the payments. 

I understand if you're a startup and can't make something happen; failing to communicate is beyond unprofessional. 

Lots of "get rich quick" gurus out there about buying deals with no money down or "creative financing" that when you peel back the curtain you realize is a scam used to sell courses online. 

A prudent investor doesn't seek quick riches through shortcuts.

What infrastructure has to be in place to prevent the client from dealing exclusively with the partnering firm once they begin communicating.

Just like any other relationship, communication is key. 

Relationships and communication is huge and that's what we try to focus on.

I would be focusing on cleaning up bookkeeping, communication portal with client, vendor list management, payment processing, etc. 

Even local title companies are turning down business for land sale without a very clear and open communication of all parties.  

A prudent investor doesn't seek quick riches through shortcuts.