What do the VCs say? The lawyers say? Does it even make sense?
From a quick peek (Yahoo! Finance web site), Q has about 2X the market cap of I, so it's plausible-ish there.
Q looks to be a US company, so probably no "can't sell America's critical technology companies to foreigners" veto from the US Govt.
I don't know what the anti-trust situation would look like...but the US Govt. has some history of blatently ignoring such things when they think something is vital to their interests.
Huge question in my mind: Why would Q pay that kind of money? (Yahoo! sez I's market cap is ~$93 billion, and companies are usually bought at a substantial premium to that.) I is in an extremely complex business, and seems to be in seriously deep do-do. Sure, on paper, Q could get their hands on all sorts of awesome assets from buying I. But, on paper, the Titanic and her contents were still worth a fabulous fortune an hour after her infamous bump in the night.
Speculation: Talk about Q buying I is just a means to an end. Test the waters. Pour some blood into them, to see what's attracted to the struggling I. Check whether futile-looking struggles and more bad news could further tank I's market cap. Q might consider buying I, if the price was dirt cheap - but mostly they hope to buy the specific parts of I which they really want, after the sharks tear I into pieces.
Buy their stock and forget about it for next 5-6 years