OTOH, motion sickness is often called "car sickness" for a reason, people who suffer from it only sometimes suffer on a bus, and rarely if ever on a train or a plane, so I'm not sure I would agree that "all transportation and tourism related businesses" are impacted. Also, doesn't dimenhydrinate work for your wife or kids?
Dimenhydrinate has undesirable side effects. My wife cannot ride buses and gets sick on planes too. It restricts our travel quite a bit.
> and rarely if ever on a train or a plane
I experience motion sickness more easily on planes than on trains or buses. Boats are a problem too, in heavy seas.
In a large plane with no or very light turbulence the motion sickness doesn't brake through, it's only an uneasy feeling. In heavier turbulence, or in things like a small Cessna or a sailplane it gets worse. I haven't had to vomit in these situations since I was a little kid, but I do feel bad from nausea.