And I fully believe right now, and for say last couple years, it would bring in more customers than it would lose. Get a few more anti-vaping articles, reports and sensationalized news stories that make it easy to shame vapers in society, and I'd agree that it would likely be more customers lost than those coming in. Yet, I don't see that magically getting better in next few years, especially if, or as, usage bans become widespread. The shaming factor is undoubtedly going to go up, even if science comes along as says what we all already pretty much think/know.
For there to be a significant loss in customers, now or at any point, the second-hand vapor myth must be in full gear. Non-vapers must believe that standing within 5 feet of a vapor will result in undue harm and harm akin to SHS. Perhaps they'll come to know it isn't exactly the same, but is close enough that if you are near a vaper, it is going to affect you adversely and thus best to avoid all locations where vapers are present.
I bolded the important part. I'm not trying to argue one way or the other, I just thought of trying to bring up some numbers regarding this. Hypothetically, you live in Dioville, population 200,000. D's market services 10% of that population, 20,000 people. In Dioville, how many people can we say vape? Let's go 5% total population, it's a small town. Sidenote, I live in Chicago, 2.7 million people inside city limits, not counting suburbs, and I have yet to see other people vaping outside a vape shop, where I have only seen approx 10 people in total. Anyway, total vapers would be 10,000.
D's Market suddenly allows open vaping, so let's say 1% of total vapers go to that store, 100 new customers, in addition to the 20,000 the market already services. Before anyone gets on me that my math is off, I am not adding in the 100 new to the 20,000 because I wanted to keep the math simple, and do it in my head.
Now, if 1% of D's Market existing customers left because of the new vapers coming in, that would amount to 200 people. With 100 new vapers coming into the store, you're still 100 in the hole on lost customers.
Hypothetically, you would lose customers. Maybe not in the numbers above, I'm just spitballing here. And in business, it's cheaper to cater to your existing customer base in order to keep them than it is to lose them and recruit new customers.