Berkshire Hathaway’s new CEO Greg Abel started the week by inking a deal to acquire homebuilder Taylor Morrison for $6.8 billion, and he's followed that up on with a $10 billion investment in Google's parent company. Abel has also hinted in the Taylor Morrison deal that he may depart from Warren Buffett’s longtime hands-off operating model by consolidating some operations. For six decades under Buffett, Berkshire promised to largely leave companies alone after it acquired them and allow the executives to keep running the day-to-day operations the same way. It’s not clear how much consolidating Abel might do among Berkshire’s dozens of companies. But Abel is known a much more active manager than Buffett ever was.