A joint venture with marchFIRST: consulting for the internet age (2000)
Stepping outside the brokerage of advertising space
This joint venture was an early attempt by a company that had grown on brokering advertising space to set foot in a line of business outside it. The ability to lock up television inventory was an overwhelming strength in a market that only went up. But as the internet spread and advertisers began asking hard questions about return on spend, securing space was no longer enough: what was needed was the capacity to advise on corporate strategy itself — and to the structural change that contemporary media had captured in 1998 as “the king at a crossroads,” Dentsu can be seen responding not by building in-house but through a joint venture.
The fact that the partner it chose went bankrupt at home also shows how difficult crossing borders is. The venture could not hold the equal-shareholding design it had started with, and Dentsu lost early the counterpart it was meant to learn American know-how from. That it nonetheless kept the Japanese entity alive suggests Dentsu had not let go of the direction of travel — from advertising agency to full-service consultancy. Whether this groping became the groundwork for the later move into digital, or remained a one-off attempt, is measured in the subsequent changes to Dentsu’s business mix.
Revenue and net margin, FY1995–FY2005
Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2000 onwards — after it was taken.
Source: securities reports
Read the full dossier in Japanese →
The Japanese edition carries the complete record of this decision — the situation that forced it, the options weighed, what actually followed, and the sources behind every claim.
Other key decisions at Dentsu Group
- 1998 The king of advertising at a crossroads: reorganization, and the groundwork for listing and expansion abroad (1998)
- 2001 Listing on the TSE after a century — the advertising giant that went public without needing the money (2001)
- 2012 The acquisition of Britain’s Aegis Group — the largest overseas M&A ever by a Japanese advertising company (2012)
- 2016 Working-practice reform and a change of president after a new employee’s death from overwork (2016)
- 2025 The vast impairment of the overseas business (Dentsu International) and the turn away from M&A (2025)
Yen amounts are converted at the average rate of each figure’s own year — not today’s rate; the revenue chart is shown in yen. Exchange rates & sources — the full ¥/US$ table →
Disclaimer
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- Sources are primarily each company’s securities reports and other public filings, but errors and omissions may remain.
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Data API
Dentsu Group’s history, financials, executives and
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Full specification →
| Method | Endpoint | Returns |
|---|---|---|
| GET | /api/companies.json | All companies |
| GET | /api/4324/manifest.json | Resource index |
| GET | /api/4324/history.json | History overview |
| GET | /api/4324/timeline.json | Chronology |
| GET | /api/decisions.json | All management decisions (index) |
| GET | /api/4324/decisions.json | Management decisions (index) |
| GET | /api/4324/decisions/{slug}.json | One decision (full dossier) |
| GET | /api/4324/executives.json | Executives |
| GET | /api/4324/shareholders.json | Major shareholders |
| GET | /api/4324/financials.json | Financial statements |
| GET | /api/4324/financials-longterm.json | Long-term results |
| GET | /api/4324/segments.json | Business segments |
| GET | /api/4324/regions.json | Sales by region |
| GET | /api/4324/workforce.json | Workforce |