There's some optimism that the Trump administration and a new head of the Federal Trade Commission will open up the door to the kinds of deal-making that proved very challenging during Joe Biden's presidency, when Lina Khan headed the FTC.
But regulatory uncertainty remains.
It's not a new risk for Microsoft. In 1995, the company paid a $46 million breakup fee to tax software maker Intuit after the Justice Department filed suit to block the proposed deal. Years later, the DOJ got Microsoft to revamp some of its practices after a landmark antitrust case.