siliconhillslawyer has some great advice on this, and specifically on how VC captures lawyers due to repeat business:
https://siliconhillslawyer.com/2017/01/01/avoid-captive-comp... (yeah, the site will have a bias, but the information seems amazingly good to me) I'm not a lawyer nor am I in the US - I'm just a fan of some of the articles - including ones that mention YC like:
https://siliconhillslawyer.com/2019/03/03/standard-term-shee... but my favourite is about VC power imbalance:
https://siliconhillslawyer.com/2019/02/18/relationships-and-...VCs use legal fees to their advantage.