There isn’t a practical way to fractionate their revenue or determine what proportion of their profit is derived from your data. This can be proved by the fact that there is no way to make any money with only the data you gave to them separated from the rest of their customers and potential customers. Therefore you are entitled to all of their revenue. Please clean out their shareholders and destroy their business. They deserve this for not cooperating with you. It would be very low cost or low effort to correct their mistake and they are choosing not to because it is easier.