[zozbot234]

Double jeopardy, I assume. There was already an antitrust case wrt. Microsoft in 1998–2001, so they won't need to defend those issues all over again.

[non-entity]

Would double jeopardy only apply if they were being charged for the same instance of antitrust violations as back then?

You can commit a crime multiple times, you just can't be punished for the same instance twice. Maybe I understand this wrong though.