Why are companies lining up to buy Chrome?

Chrome could eventually be up for sale, if the US Department of Justice gets its way in the remedies trial for US v. Google. And there are already buyers lining up at Google's door.

Any potential sale might not happen for a very long time. The remedies trial is still ongoing, a decision in that trial isn't expected for quite awhile, and Google has already said it will appeal, which will definitely add more time to the process and could ultimately reverse a ruling where Google might have been forced to sell the browser.