A possible cause of this could be that in large companies (with a few rungs of management), people think they need to sound impressive to be listened too. Thus

A possible cause of this could be that in large companies (with a few rungs of management), people think they need to sound impressive to be listened too. Thus they try and make the idea sell-able. This dumb's it down and you get the lowest-common-denominator stuff this article is talking about.