isolation paradise; closed paradise
Refers to a market or industry that thrives in isolation, often because of unique domestic products that face little or no foreign competition. Used in economic or cultural commentary.
Japan's feature phone market is sometimes called an isolation paradise.
In an isolation paradise state, foreign competitors find it hard to enter.
Compound of パラダイス (paradise) and 鎖国 (national isolation, closed country). The term plays on the historical concept of sakoku to describe a self-contained, prosperous market.