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I think it's even simpler than that: making software leaner doesn't bring in much money. Making more features does. Selling more hardware does.

• bostonsre 5y ago
  Right, making software leaner for small organizations doesn't give a good return on investment for the effort applied. But for larger organizations that have a massive compute bill like say Netflix, the return on investment of software optimizations across that massive compute footprint saves millions of dollars. So it makes sense to have performance engineers like Brendan Gregg on the pay roll. His book on systems performance is ridiculously good and is useful for smaller orgs as well when systems performance degrades to the point where the customer is impacted.