I had recently done a lot of research on natural father and stepfather adoption for a case I was working on. Back in “Jobs’ day” and far beyond, “natural fathers” who were “unwed” had virtually no rights in CA, practically speaking. MANY fathers were permanently estranged from their blood kin . . . not of their own choice and often for life.
The “Jobs story” here turned out just like the vast majority of them did.
Thankfully, the old CA Civil Code sections dealing with “illegitimacy” have since been repealed in the early nineties.