Every company cares about money, but you're naive to think that they had anything to do with this. Even if they knew about this, they're not going to so something as ridiculous as prepare an entire official statement to disprove any ridiculous rumors.
As if they would have to write up an official statement; stop defending them! They could have easily got their Twitter guy (who also fed the misinformation) to tweet up "Rumor about streaming gameplay at PAX isn't true. :-)"