DeNA

The WelQ shutdown: taking down all ten curation sites (2016)

Key decision·2016· DeNA — the full company history →

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


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 →


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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