I think it was 1992 or so before it was really clear that patents were the true and final nemesis of my chosen profession. By "clear," I mean "obvious to anyone not in denial." Of course there's a lot of denial.
By 1999 I worked for a company that routinely filed what we called "linked list... on a phone!" patents. Unwired Planet - the geniuses behind WAP. In fact, I think there never would have been a WAP Forum if we hadn't muscled Motorola, Nokia and Ericsson with our HDML patents. (These crap patents probably provide most of the remaining market capitalization of UP's remnant, Openwave.)
Across this continuum, I have heard a continuous strand of discourse denying that there's a pit at the end of this tunnel. This discourse relies existentially on the belief that just because people could be evil, doesn't mean they will be evil. Which is true, but only in the short run. Facilis descensus Averni.