Interest as right, see definition 4 instead of 2.

Definition of interest

 (Entry 1 of 2)

1a: a feeling that accompanies or causes special attention to something or someone : CONCERN

b: something or someone that arouses such attention

c: a quality in a thing or person arousing interest

2: ADVANTAGE, BENEFITalso : SELF-INTEREST

3a: a charge for borrowed money generally a percentage of the amount borrowed

b: the profit in goods or money that is made on invested capital

c: an excess above what is due or expectedreturned the insults with interest

4a(1): right, title, or legal share in something

(2): participation in advantage and responsibility

b: BUSINESS, COMPANY

5: SPECIAL INTEREST