Alphabet doesn't reveal revenue for YouTube or Google Cloud. Here's why new CEO Sundar Pichai would benefit by being more transparent. (GOOG)

· Alphabet will reports its fourth-quarter earnings on Monday, but as is its regular practice, it will likely leave out some key information.
· The company doesn't break out sales of YouTube, Google Cloud, or some of its other key businesses.
· That practice has made it difficult for investors and analysts to evaluate the...