Amazon blocked Meta Platforms (NasdaqGS:META) Muse AI shopping assistant from accessing its marketplace, escalating a clash over AI commerce control. Meta has been positioning Muse as an AI agent that helps users compare products and pricing across multiple online retailers, including Amazon. The block complicates Meta's push to expand AI shopping tools alongside partnership efforts such as its tie up with Shopify. Amazon's move to shut out Meta's Muse assistant is only one piece of a...