This article suggests two expansions of Roger's model to apply his model to Business Phenomenon. One of expansions is a view of "Business Systems". The other expansion is concept of "selective communications". To analyze a diffusion of innovations especially in industry, we introduce a view of "Business Systems". To analyze details and mechanisms of diffusion of innovations, we introduce a concept of "selective communications".This article is a suggestion of framework, not providing empirical evidences. The latter issue is a next theme.