Currently, there are only three companies that are worth $3 trillion or more. All of those are actually above $4 trillion in market cap. While Microsoft is technically below a $3 trillion market cap right now, it's usually valued above that threshold when the market isn't in a negative mood like it is right now.What's more intriguing is examining if Amazon (AMZN +2.44%), Taiwan Semiconductor (TSM 0.57%), Space Exploration Technologies (SPCX +0.13%), or Broadcom (AVGO 3.39%) will be the next $3 trillion comp ...