I believe your contract is unjust. While I can't speak for you personally, I believe many people sign such contracts without regard to their justness, because

I believe your contract is unjust. While I can't speak for you personally, I believe many people sign such contracts without regard to their justness, because they don't have market power to renegotiate the contract. And I believe that under such circumstances it's not unethical to "renegotiate" the contract by infringing it and seeing what happens.