The WelQ shutdown: taking down all ten curation sites (2016)
On carrying speed into the public sphere
The core of this crisis response lay less in the financial loss itself than in how to face the damage to trust that the way it ran the business had invited. DeNA had built, in mobile games, a style of gathering page views through search and expanding a business on speed and volume. The root of this problem lay in carrying that style into the domains of medicine and health — where accuracy can be a matter of life and death — without first putting a vetting system in place. In the sequence by which President Moriyasu closed every site, entrusted the dissection of his own company to an outside committee, and took responsibility by cutting his pay, there was a reckoning with the very way the business was run.
That said, the question this problem posed does not stop at DeNA alone. How far does media that chase scale on inflows from search bear responsibility for the accuracy of the information they carry, and for the rights of others? The venture temper that prizes speed and experiment is a force that gives rise to new businesses, but in domains bearing on people’s health and safety it can also become an excuse for skipping the trouble of verification. The observation that the words “permanent venture” had become an indulgence for expansion remains as a question that continues to this day — how a company in a hurry to grow reconciles itself with public responsibility.
Revenue and net margin, FY2011–FY2021
Revenue in ¥ bn (bars) and net margin in % (line), for the years around the decision. Shaded columns are FY2016 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 DeNA
- 2009 From ad revenue to item billing: Kaito Royale (2009)
- 2010 Buying ngmoco: a bid at a global game platform (2010)
- 2011 Buying the Yokohama BayStars: baseball as advertising (2011)
- 2015 The Nintendo alliance: a cross-shareholding for IP (2015)
- 2021 Changing presidents and cutting fixed costs (2021)
- 2026 The founder returns: Tomoko Namba, and an AI pivot (2026)
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
- This page is provided for general information only and is not investment advice, nor a recommendation to buy or sell any security.
- Figures are compiled independently and include our own estimates, approximations and machine-processed data; we make no warranty as to their accuracy or completeness.
- Sources are primarily each company’s securities reports and other public filings, but errors and omissions may remain.
- Any use of this information is at the reader’s own risk. Past performance does not indicate future results.
- Company names, logos and other marks belong to their respective owners.
Data API
DeNA’s history, financials, executives and
shareholders are published as static JSON — no key, plain GET.
Full specification →
| Method | Endpoint | Returns |
|---|---|---|
| GET | /api/companies.json | All companies |
| GET | /api/2432/manifest.json | Resource index |
| GET | /api/2432/history.json | History overview |
| GET | /api/2432/timeline.json | Chronology |
| GET | /api/decisions.json | All management decisions (index) |
| GET | /api/2432/decisions.json | Management decisions (index) |
| GET | /api/2432/decisions/{slug}.json | One decision (full dossier) |
| GET | /api/2432/executives.json | Executives |
| GET | /api/2432/shareholders.json | Major shareholders |
| GET | /api/2432/financials.json | Financial statements |
| GET | /api/2432/financials-longterm.json | Long-term results |
| GET | /api/2432/segments.json | Business segments |
| GET | /api/2432/regions.json | Sales by region |
| GET | /api/2432/workforce.json | Workforce |