I never claimed that any of those companies invented any of the technologies. I'm just saying that after those companies became huge successes in their respective business segments, Google came though after the incumbents with a goal to gain market share. Android did come out after iOS was huge, Google+ did come out after Facebook was huge, Drive came out after Dropbox was huge, Buzz came out after Twitter was huge, Chrome came out after Firefox was huge, and so on with Search (Altavista/Lycos/Yahoo), Flights (Kayak, Cheaptickets), Offers (Living Social,Groupon), Mail (Hotmail, Yahoo), Play (iTunes), Maps (Mapquest), Talk (AIM, ICQ) etc...
None of the companies that Google copied invented their segments. It does seem that their aim to make each respective Google version of any product better they seem to piss off the incumbent companies. It's all just business and some of those endeavors that Google perused are awesome (Android, Maps, Gmail), and others aren't that great (Buzz, Google+). But in the end, all of the incumbent companies seem to get mad at Google and that's why I think that Google may be getting hurt more in the long run.