I take it you have never worked in retail because the difference would be immediately obvious.

Why work at large Bay Area tech: - Free catered breakfast, lunch and dinner - Free gourmet coffee - Free snacks - Free drinks - Free company merch: t-shirts, backpacks, jackets, tickets to events, etc. - Nice offices - Nice bathrooms

Added value per day = $75+

Why work at Target: - $3 more per hour

Added value per day = $24 (assuming 8 hour shift)