It IS reciprocal. You're welcome to present that "non-comparable hire" contract to the company before accepting your offer, but they no doubt will rescind your offer. You have the same right to reject the offer if you don't like the contract they present.

It's common for executive's lawyers to negotiate contracts with the firm before accepting an offer (including what the firm can or cannot do to the executive without penalties). I wish it were more normalized for ICs.