An increasing number of contracts demand exclusive rights of varying scope depending on the contract, but then provide that the author gets the rights back after a certain time (for example, one year). Or some provide that after a certain period, the creator gets the rights back, but the grantee may continue to engage in certain kinds of exploitations on a non-exclusive basis. Depending on the contract, the creator and grantee may exploit the work without getting each other’s approval; depending on the contract, the grantee may keep on exploiting the work on a non-exclusive basis without having to pay the author.
If you have to give up exclusive rights, this is a fairly creator-friendly compromise, but you may want to try to retrieve enough control to have a say in what the grantee does (or to get paid for it).
