According to Lex Fridman, major open source projects such as Linux, PyTorch, TensorFlow, and open-weight large language models (LLMs) are foundational to the current AI ecosystem, enabling rapid innovation and reducing development costs across industries. These technologies provide scalable infrastructure, flexible machine learning frameworks, and robust data processing tools, which are critical for startups and enterprises building AI-driven applications. The widespread adoption of open source AI tools is accelerating AI deployment in sectors like cloud computing, autonomous systems, and data analytics, presenting significant business opportunities for solutions built atop these platforms (source: Lex Fridman, Twitter, August 5, 2025).