Comparing revenue per employee between different industries doesn't make any sense, since profit margins vary so wildly. For example, a healthcare distributor like McKesson has $122 billion in revenue, but since they're just distributing goods they are spending 95 cents of every revenue dollar in buying those goods. Their profit margin is under 2%. Meanwhile, software companies, especially with digital delivery, have COGS of 10% or less, leaving room for operating margins of 20-30%. Thus a software company makes the same profit per employee as McKesson with one-tenth of the revenue.