Many products are created to meet a need or solve a problem - not all inventers/innovators start businesses based on their ideas.
Some choose to sell their ideas to existing businesses for manufacturing or marketing - requires entrepreneurial qualities and a willingness to take risks.
Innovation - Improving or significantly contributing to an exisiting product or service.
Invention - creating something completely new.
Both result in something unique - they impact the way we live and work and boost economic activity.