[Growing Businesses] Soaring dining costs and America’s unexpected alternative — economic journalist Ha Su-jeong
An independent exercise, not a statement by the video creator or verification of every claim in the video.
How more diners can produce less profit
Assume a hypothetical restaurant earns 30 per diner, incurs variable costs of 18 and has daily fixed costs of 900. With 100 diners, profit is (30−18)×100−900=300. Even if all-you-can-eat service attracts 120 diners, variable costs of 24 produce (30−24)×120−900=−180. Contribution per diner falls from 12 to 6, raising break-even traffic from 75 to 150 diners.
Check for yourself
- Have ingredients, waste and extra labor for additional diners been included?
- If longer stays reduce table turnover, can the restaurant accommodate the required traffic?
Limits of application
This is hypothetical arithmetic, not company data. All amounts use the same arbitrary unit, with unchanged fixed costs and sufficient seating assumed. Taxes, financing costs and variation in individual consumption are omitted.
- What to look for
- Understand why predictable spending for diners can create variable-cost risk for an all-you-can-eat restaurant.
- Why it matters
- Calculate contribution per diner separately from fixed costs before treating traffic growth as better performance, and distinguish everyday meals from special-occasion spending.
Timeline
6 segmentsOvereating to justify an admission price already paid is explained as a sunk-cost error. The central point is that restaurants bear food waste and ingredient costs, making menu design, placement and customer volume joint management concerns.