Why did Microsoft Destroy Bing?

Bing now has video ads complete with sound.  And the sound cannot be turned off for all the ads, only individucal ones.  So a user cannot listen to Pandora while doing a search with Bing unless he does not mind having his favorate songs being interupted.

Who had the idea that it was OK to have video ads on Bing?  No one is going to tolerate this annoyance.