Hi all,
I have the same concern. I am working on a GPT that helps people choose a bank account based on their needs expressed in chat. My job involves selecting banks and rationalizing the informational brochures of their services to improve the quality of responses. In short, I do what used to be called “curation” 
I am writing on this form because I have just discovered that the site https://www.yeschat.ai/ has cloned my GPT (https://www.yeschat.ai/gpts-9t55kc6SQXA-Fintech-Buddy) and is passing it off as their own.
I read the thread where other users are complaining about the same problem (A site is stealing and duplicating our GPTs - how can we protect our GPTs? - #25 by madalina.cristiana.c), but it seems to me that OpenAI’s position is more or less “it’s your problem: once you make the GPT public you can’t expect it not to be copied.”
I do not intend to get into a debate about IP, but I would like to understand if there is a way to protect the work of building the custom knowledge of the GPT. Since the GPT uses “actions” to further enrich its knowledge, I would like to know if a cloned GPT can also access the “actions”.