I have read more than once Adobe might secretly be ok with this. Price agreed to before valuations fully cratered.
I am sure Musk wished the DOJ could have helped him out as well.
They might be hoping to sue competitors like penpot for being similar to Figma, since Figma's IP would become Adobe's. Or maybe patent troll with some WASM patents, if Figma got them (they sure pioneered with WASM). I don't think suing competitors for having similar designs to Figma will work because penpot could change their design a bit, but it will slow it down.