{"type":"rich","provider_name":"Hatena Blog","categories":[],"published":"2026-01-24 11:42:58","description":"\u6982\u5ff5\u306e\u5b9a\u7fa9\u3068\u7406\u8ad6\u7684\u57fa\u790e \u53c2\u5165\u969c\u58c1\u3068\u306f\u3001\u65b0\u898f\u4f01\u696d\u304c\u3042\u308b\u7523\u696d\u30fb\u5e02\u5834\u306b\u53c2\u5165\u3057\u3088\u3046\u3068\u3059\u308b\u969b\u3001\u65e2\u5b58\u4f01\u696d\u3068\u6bd4\u8f03\u3057\u3066\u76f4\u9762\u3059\u308b\u4e0d\u5229\u306a\u6761\u4ef6\u3084\u8ffd\u52a0\u7684\u30b3\u30b9\u30c8\u3092\u751f\u307f\u51fa\u3059\u8981\u56e0\u3092\u6307\u3059\u3002\u3053\u306e\u6982\u5ff5\u306f\u3001\u7d4c\u6e08\u5b66\u8005Joe S. Bain\u304c1956\u5e74\u306e\u8457\u66f8\"Barriers to New Competition\"\u3067\u4f53\u7cfb\u5316\u3057\u305f\u3053\u3068\u3067\u78ba\u7acb\u3055\u308c\u305f\u3002Bain\u306f\u53c2\u5165\u969c\u58c1\u3092\u3001\u65b0\u898f\u53c2\u5165\u4f01\u696d\u304c\u88ab\u308b\u69cb\u9020\u7684\u306a\u4e0d\u5229\u76ca\u3068\u3057\u3066\u5b9a\u7fa9\u3057\u3001\u65e2\u5b58\u4f01\u696d\u304c\u8d85\u904e\u5229\u6f64\u3092\u7dad\u6301\u3067\u304d\u308b\u30e1\u30ab\u30cb\u30ba\u30e0\u3068\u3057\u3066\u4f4d\u7f6e\u3065\u3051\u305f\u3002 \u7406\u8ad6\u7684\u306b\u306f\u3001\u53c2\u5165\u969c\u58c1\u306f\u5e02\u5834\u7af6\u4e89\u306e\u7a0b\u5ea6\u3092\u898f\u5b9a\u3059\u308b\u91cd\u8981\u306a\u5909\u6570\u3067\u3042\u308b\u3002\u53c2\u5165\u969c\u58c1\u304c\u4f4e\u3044\u5e02\u5834\u3067\u306f\u300c\u81ea\u7531\u53c2\u5165\uff08free entry\uff09\u300d\u304c\u5b9f\u73fe\u3057\u3001\u8d85\u904e\u5229\u6f64\u306e\u767a\u751f\u306f\u65b0\u898f\u53c2\u5165\u3092\u8a98\u767a\u3059\u308b\u305f\u2026","author_name":"kyorosukeke","blog_title":"\u3068\u3042\u308b\u6295\u8cc7\u5bb6\u306e\u5b66\u7fd2\u5e33","version":"1.0","image_url":null,"author_url":"https://blog.hatena.ne.jp/kyorosukeke/","title":"\u53c2\u5165\u969c\u58c1\u306e\u7406\u8ad6\u3068\u5b9f\u52d9\uff1a\u7af6\u4e89\u512a\u4f4d\u6027\u3092\u898f\u5b9a\u3059\u308b\u69cb\u9020\u7684\u8981\u56e0","blog_url":"https://kyorosukeke.hatenablog.com/","height":"190","provider_url":"https://hatena.blog","width":"100%","html":"<iframe src=\"https://hatenablog-parts.com/embed?url=https%3A%2F%2Fkyorosukeke.hatenablog.com%2Fentry%2F2026%2F01%2F24%2F114258\" title=\"\u53c2\u5165\u969c\u58c1\u306e\u7406\u8ad6\u3068\u5b9f\u52d9\uff1a\u7af6\u4e89\u512a\u4f4d\u6027\u3092\u898f\u5b9a\u3059\u308b\u69cb\u9020\u7684\u8981\u56e0 - \u3068\u3042\u308b\u6295\u8cc7\u5bb6\u306e\u5b66\u7fd2\u5e33\" class=\"embed-card embed-blogcard\" scrolling=\"no\" frameborder=\"0\" style=\"display: block; width: 100%; height: 190px; max-width: 500px; margin: 10px 0px;\"></iframe>","url":"https://kyorosukeke.hatenablog.com/entry/2026/01/24/114258"}