Conspiracy theory #1:

Everybody knows Google is seeking world domination. Perhaps the barges hold their version of iRobot ready to pounce on MS and Apple. 
Throw in a little Yahoo too.  

Well, sure - now it makes perfect sense.

You sure that's not mis-information?  All true conspiracy theories have protectors of the secrets whose primary job is to sow in the media 'explanations' that hide the truth.  And since the 'cover story' put out by Google makes such good sense, it must be a cover up.   <- is humor

There are now 3 of them.  'Lavish showplaces' seems highly logical to me.  /sarc

Maybe whatsisname saw Iron Man one too many times.

Step 1.   Control what you 'want' and what you 'think'.

Step 2.  Moveable structures for 'Soylent Green'.

[of course they need to move.....once you've farmed the local populace you'll need to relocate.....] ...

Still makes perfect sense.

...  just wait till you see the spherical stuff and the barges getting sunk.