There are lots of things on bloomblerg that cannot be found at google or yahoo... To name only a few: intraday market data, company filings, detailed/processed financial information (product/geographic segmentation, non-gaap metrics), transcripts of earnings calls, sell-side estimates, corporate actions (M&A, IPOs/secondary offerings), information about management, customers, suppliers, institutional shareholders...
There's the board of Exxon Mobil, along with links to analyst estimates, company filings, related firms, calendar of their calls, transcripts, list of institutional shareholders, and so on.
Most of the things you mention are certainly easier to find on a terminal, but you can get them for free elsewhere. Also don't forget many things on Bloomberg require you to pay even more. Short interest data on European stocks for instance.
I don't know how to get the intraday data from Google, do you also get 50 days, quotes, trades, volumes traded...? There is some useful info in the reuters.com page linked from google. But still there are so many things that are not there. There is only very basic financial info, and I don't think you get it in google finance within minutes of it being published. Of course you could read the press release for free. And read every filing from the company yourself, and every filing from any related company, and from any asset manager who might have a relevant disclosure. And then you you can process all that data to put it in a comparable format. All for free!
(FWIW, I find many of lordnacho's HN contributions to be decent and in many cases insightful).