@Ahhh, the irony!
First of all you make the mistake of thinking that the "online porn industry" is the same as the online *adult* industry (it's not) and secondly trying to compare the tobacco companies who *knew* that their product was harmful to people to either is utter nonsense since despite many years of trying, *nobody* has provided any scientifically verifiable proof that porn or adult content actually causes any harm at all.
The vast majority of the adult industry has no desire to "inflict" its product on anyone who doesn't want to see it, unlike the "moral minority" who want to inflict *their* views on everyone by saying that "we should be the ones who decide what is or isn't safe or acceptable for you to view".
If you want to make sure that you don't see porn, invest in the free blocking software that is available. If you want to make sure your children don't see it, take some RESPONSIBILITY for the upbringing of your offspring.