{
  "spec_version": "3",
  "endpoint": "decisions",
  "stock_code": "4755",
  "company_name": "楽天グループ",
  "content_lang": "ja",
  "meta_lang": "en",
  "canonical_url": "https://the-shashi.com/tse/4755/",
  "api_url": "/api/4755/decisions.json",
  "updated": "2026-08-05",
  "license": "© 2026 Yutaka Sugiura. All rights reserved.",
  "attribution": "The社史 (the-shashi.com) — https://the-shashi.com/tse/4755/",
  "count": 7,
  "description": "Index of this company's management decisions. One decision = one endpoint: follow api_url for the full dossier (background, the decision itself, outcome, quoted primary sources and references).",
  "decisions": [
    {
      "slug": "founding-1997",
      "url": "/tse/4755/decisions/founding-1997/",
      "api_url": "/api/4755/decisions/founding-1997.json",
      "year": 1997,
      "month": 2,
      "type": "founding",
      "title": "楽天グループ創業——興銀を辞した32歳が月5万円で開いた仮想商店街",
      "subtitle": "阪神大震災で銀行員人生を見直した32歳・三木谷浩史氏は、月額5万円の固定料金でインターネット上の仮想商店街をどう軌道に乗せたか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "fee-model-shift-2002",
      "url": "/tse/4755/decisions/fee-model-shift-2002/",
      "api_url": "/api/4755/decisions/fee-model-shift-2002.json",
      "year": 2002,
      "month": 2,
      "type": "transformation",
      "tags": [
        "bm-model-shift",
        "st-pricing"
      ],
      "title": "「不動産型」から「フランチャイズ型」への料金体系転換",
      "subtitle": "月5万円固定モデルはなぜ限界に達し、三木谷浩史氏はどう「第2の創業」に踏み切ったか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "aozora-card-2004",
      "url": "/tse/4755/decisions/aozora-card-2004/",
      "api_url": "/api/4755/decisions/aozora-card-2004.json",
      "year": 2004,
      "month": 8,
      "type": "acquisition",
      "tags": [
        "pf-diversify-related",
        "st-platform"
      ],
      "title": "あおぞらカード買収による個人金融参入——後の楽天カードとなる会社の取得",
      "subtitle": "決済とローンを他社に委ねたままでよいのか——赤字のカードローン会社に74億円を投じた選択",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "economic-zone-ma-2004",
      "url": "/tse/4755/decisions/economic-zone-ma-2004/",
      "api_url": "/api/4755/decisions/economic-zone-ma-2004.json",
      "year": 2004,
      "month": null,
      "type": "acquisition",
      "tags": [
        "ma-rollup",
        "pf-diversify-related",
        "st-platform"
      ],
      "title": "旅の窓口・DLJ証券の連続買収による三領域経済圏の構築",
      "subtitle": "モール単体への依存から脱するため、三木谷浩史氏はなぜ在庫を持たない「ノータッチモデル」で旅行と金融を束ねたのか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "rakuten-eagles-2004",
      "url": "/tse/4755/decisions/rakuten-eagles-2004/",
      "api_url": "/api/4755/decisions/rakuten-eagles-2004.json",
      "year": 2004,
      "month": 9,
      "type": "new_business",
      "tags": [
        "pf-diversify-unrelated",
        "st-brand"
      ],
      "title": "球界再編下のプロ野球新規参入——東北楽天ゴールデンイーグルスの設立",
      "subtitle": "なぜネット企業が赤字必至とされた球団を持つのか——50年ぶりの新規参入をめぐるライブドアとの獲得競争",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "ebank-acquisition-2008",
      "url": "/tse/4755/decisions/ebank-acquisition-2008/",
      "api_url": "/api/4755/decisions/ebank-acquisition-2008.json",
      "year": 2008,
      "month": 9,
      "type": "acquisition",
      "tags": [
        "ma-domestic",
        "capital-alliance",
        "pf-shift"
      ],
      "title": "イーバンク銀行への200億円出資と傘下化——楽天銀行として金融の中核を取り込む",
      "subtitle": "経済圏に欠けた「銀行」を、経営難のネット銀行の救済で埋められるか",
      "status": "implemented",
      "status_label": "実施"
    },
    {
      "slug": "mno-mobile-entry-2017",
      "url": "/tse/4755/decisions/mno-mobile-entry-2017/",
      "api_url": "/api/4755/decisions/mno-mobile-entry-2017.json",
      "year": 2017,
      "month": 12,
      "type": "new_business",
      "tags": [
        "pf-diversify-related",
        "st-capex",
        "st-tech"
      ],
      "title": "楽天の第4のMNO参入と完全仮想化ネットワークの構築",
      "subtitle": "EC・金融で築いた経済圏を、三木谷浩史氏はなぜ自前の携帯基地局につないだのか",
      "status": "implemented",
      "status_label": "実施"
    }
  ],
  "by_type": [
    {
      "key": "acquisition",
      "count": 3,
      "url": "/api/4755/decisions/by-type/acquisition.json"
    },
    {
      "key": "founding",
      "count": 1,
      "url": "/api/4755/decisions/by-type/founding.json"
    },
    {
      "key": "new_business",
      "count": 2,
      "url": "/api/4755/decisions/by-type/new_business.json"
    },
    {
      "key": "transformation",
      "count": 1,
      "url": "/api/4755/decisions/by-type/transformation.json"
    }
  ],
  "by_decade": [
    {
      "key": "1990s",
      "count": 1,
      "url": "/api/4755/decisions/by-decade/1990s.json"
    },
    {
      "key": "2000s",
      "count": 5,
      "url": "/api/4755/decisions/by-decade/2000s.json"
    },
    {
      "key": "2010s",
      "count": 1,
      "url": "/api/4755/decisions/by-decade/2010s.json"
    }
  ]
}