Advertising is Google's castle. Search is also in the moat. Then again, the quality of Google's moat is often better than other companies' castle. Also, Googl

Advertising is Google's castle. Search is also in the moat. Then again, the quality of Google's moat is often better than other companies' castle. Also, Google doesn't so much 'ravage industries', it innovates in them. Which can be the same. The industrial revolution 'ravaged industries' too.