Sure, but there are many ways to get future cash flows. A significant difference in the valuation of the two companies is that with Wal-mart, the expectation of future cash flows (and therefore present value) comes primarily from its present size, the cash flows that brings, and its expected ability to continue bringing in such flows. Whereas with Amazon, which has much lower current market share and cash flow, the market is "saying that Amazon's growth prospects outweigh it relatively smaller size". Hence the proportion of expected future cash flows that investors expect to come in the form of future growth is significantly higher with Amazon than with Wal-Mart. Therefore you would expect Amazon to have a lower current size and current headcount per unit present valuation, even if there were no differences in productivity.
What I was criticizing was just using the ratio of present market cap and present headcount as a meaningful metric, when comparing companies with very different growth expectations. That effectively becomes a restatement of the different growth expectations: Amazon has the same market cap as Wal-Mart but its present size is smaller in almost any way you could count present size (sales, headcount, etc.).
What I was criticizing was just using the ratio of present market cap and present headcount as a meaningful metric, when comparing companies with very different growth expectations. That effectively becomes a restatement of the different growth expectations: Amazon has the same market cap as Wal-Mart but its present size is smaller in almost any way you could count present size (sales, headcount, etc.).
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