By that logic a copy of source code for a propriatary app that someone has stolen and placed online is immediately free for all to use as they wish.
Being on the internet doesnt make it yours, or acceptable to take. In the case of OpenAI (and Anthropic) they should be following the long held principle of the robots.txt file on sites, which can be specifically set to tell just them that they may not take your content - they openly ignore that request.
OpenAI absolutely is stealing from everyone, hence why most will have little sympathy when they complain someone stole from them.
Being on the internet doesnt make it yours, or acceptable to take. In the case of OpenAI (and Anthropic) they should be following the long held principle of the robots.txt file on sites, which can be specifically set to tell just them that they may not take your content - they openly ignore that request.
OpenAI absolutely is stealing from everyone, hence why most will have little sympathy when they complain someone stole from them.