* One company wouldn't budge. Later, I got a better deal, but it was risky the way I went about it. * At another company, I just didn't sign it. They didn't stop me from starting work but when the omission was noticed they had an HR person pester me about it a few times. They eventually gave up. * At yet another place, I crossed out the parts I didn't like. They just kind of shrugged and said okay.
At no time did I ever want anything unreasonable. I just didn't want all the things that I or my descendants designed/built/invented/helped-whatever to be assigned to ['company'] in perpetuity, etc. And I didn't want a contractual responsibility to come and defend patents in courts, or give depositions at my expense.