Wait...what do you mean IF I am right?
Seriously though, there are a lot of good people in the world. Many of us know what is right and what is wrong and many still choose to do "wrong" things because of habit, peer pressure, tradition, culture, addiction...etc.
Smoking, alcohol consumption are common practices that most people know to be harmful and yet they still do it. Improvements will come if we can align our actions with what we know to be right and with our morals. At this moment in time too many people are not willing to do that unless they are forced to.
I believe that there are quite a lot of people who are not currently vegan but who know in their hearts that the vegan position makes sense morally and ethically, and choose to "look the other way" so that they don't have to face the reality of their food choices. It is amongst the more compassionate of those people that we are more likely to find the next generation of vegans. The "die hards" that don't give a shit about animals and are unconcerned about them being killed in their billions will double down on weak excuses for not going vegan and say things like "BACON!". Probably not much value to be had in discussions with such folk.
It may not happen in my lifetime, but in the future hopefully the word "vegan" will be obsolete. In the same way that we don't have a word for people who don't eat human flesh, when not eating animal flesh becomes the norm, we won't need a word for that either, and the cannibals and "
carnists"? will be a tiny minority.