Comment by thisisbad

  Except that Musk currently only has two...

Batista had one EBX Group and the ones mentioned were subsidiaries.

  ...both are doing quite well and delivering on their promises

They are not profitable, which means they are not doing well.

  ...he's landing rockets on ships and selling tens of thousands of enormously expensive cars per year.

Batista's companies were drilling for oil, doing construction, shipping and many other things.