What extent do sustainability practices within business models relate to profits and positive impacts on the environment?

Research Question:  What extent do sustainability practices within business models relate to profits and positive impacts on the environment?

To assess the current sustainability practices for start-ups.
To explore the key success factors that facilitate or enhance sustainability in start-ups.
To investigate the barriers or hurdles that inhibit sustainability in start-ups.
To discover the most practical advice for making sustainability flourish within start-ups.