noun
niche industry
A business sector that targets a small, specialized segment of the market. Often contrasted with 隙間産業 (すきまさんぎょう), which has a similar meaning but may emphasize filling a gap.
See also: 隙間産業
この会社はニッチ産業で成功を収めた。
This company succeeded in a niche industry.
Similar meaning, but 隙間産業 often implies filling a market gap, while ニッチ産業 is a direct loanword for 'niche industry'.
From English 'niche' + 産業 (industry).