An "unfair advantage" in a startup refers to a unique advantage that a company has over its competitors.

This can take many forms, such as patented technology, access to unique data or resources, a highly efficient distribution network, or a team with a unique background.

The term "unfair" is used because this advantage gives the company an edge over its competitors and makes it harder for others to catch up. An unfair advantage is often seen as a key factor in the success of a startup, as it can help the company differentiate itself in the market and gain a strong foothold in the industry.