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Microsoft's $1 billion investment into OpenAI may be one of the shrewdest bets in tech history. OpenAI released AI bot ChatGPT and is in discussions to raise capital at a $30 billion valuation. If ChatGPT lives up to its potential, Microsoft may have future proofed its cloud and browser business forever.It has looked, over the past few months, like Big Tech's bull run is coming to end. As interest rates soar,...