Module 3: Suppliers and Cost
Fixed vs. Variable Costs, Netflix/Blockbuster
One of the most important concepts in Economics for Managers is the distinction between fixed and variable costs. This distinction impacts the structure of a market and informs hiring and pricing decisions.
A number of you have asked in Peer Help why wages paid to an hourly worker are variable costs, but salaries are fixed costs. Here’s a way to think about it: a variable cost is a cost which increases with the amount produced and sold. In the course, we’ve assumed—as is the case in practice—that a company is able to adjust the number of hours worked by an hourly worker depending on demand. (That’s the reason they’re called “hourly workers,” after all). Thus, during weeks with high demand, total wages paid to hourly workers increase; during weeks with low demand, they would decrease. On the other hand, salaries cannot typically be adjusted week by week since they are fixed for a longer period of time (most commonly, a year). Thus, these would be fixed costs.
We also wanted to call attention to one case in the course in particular. There is usually a lot of interest in and posts related to Netflix and its topple of Blockbuster in the late 2000s. As mentioned in the course, fixed costs certainly played a significant role in this case. Regarding this, a past learner who actually consulted for Blockbuster in the 90s had the following to say:
“In the 90's I was a consultant working with Blockbuster. Netflix had been starting to really make itself known. We (and several other consultants) were advising them that they needed to really change their business model because Netflix was going to kill them. The problem here (in my opinion) was not the scaling up, it was all the sunk cost that they had in all the stores. Even when our company built an online movie rental capability for them, they insisted that the customer needed to come to the store and get the rental. I think it would be interesting to hear what the instructor would say about how hard it is to write off all your sunk-cost investments when someone reinvents the market you dominate.”
Costs were inevitably important in Blockbuster’s demise and Netflix’s rise. One way of seeing Blockbuster’s challenge was its refusal to write down sunk costs. Another similar perspective is that moving even some business online would dramatically reduce the profitability of its stores since they were largely fixed-cost operations.
Today, Netflix appears to be doing well, but as some of you may have noticed, Amazon’s Prime services are beginning to compete directly. Competition never sits still.
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