Now, the company has sent out a clear message to other startups in its ecosystem: if you're using OpenAI's products to make a buck, we might soon rip the rug out from under your feet. Specifically, OpenAI released a new update to ChatGPT over the weekend that allows subscribers to upload PDFs to ChatGPT Plus, letting the chatbot summarize their content. While that may be a boon to office workers who are saddled with poring over endless PDFs, Insider points out that the move is a death stroke for businesses that have built products that use OpenAI's system to help customers process PDFs. It's a stark reminder that Big Tech's decisions can easily vaporize smaller players — perhaps more so than ever in the ever-shifting field of AI entrepreneurship.