Arena CEO @ml_angelopoulos on why he thinks there's room for at least one American open source AI company to be a trillion-dollar business: "We saw earlier this year that Anthropic is willing to cut off your model at any time. Imagine that you build your business on top of an intelligence and then some CEO based on political beliefs decides to destroy your business's data pipeline." "Businesses don't want that. And they also don't want to be buying models from a potentially adversary, which…