I wouldn't count on the FDA and their owners finding a way to cash in on vaping just because it's inarguably as or less harmful than tobacco. They like to stick with their guns, and they've already got tobacco in their pocket. They have things on schedule 1 of the drug list that are LESS harmful than tobacco, things that have absolutely no known longterm medical side affects just for the reason that they don't want to go to the trouble of capitalizing on them and maybe losing revenue from their already booming legal intoxicant trade.
As to what we will do (I say "we" even though I haven't gotten my vape yet, but it will be soon

)? The same as every other community of consumers which has been made illegal for the reasons of the personal finances and continued power of a few well-placed ........s. We'll adapt, and we'll go underground. For one, it will ALWAYS be possible to order the stuff from overseas even when it's completely illegal. You can right this minute order anything from ....... to cannabis seeds off the internet without too much trouble or too much worry of interception. Mail simply IS NOT checked except on a spotty basis. Even when it is checked, it is ridiculously easy to hide things that come in small quantities - you might have to punch a hole in the false bottom of the container your nic-juice came in to drain it into a dripper bottle, but you'll always be able to order the stuff in the mail and even the crazy overreaching federal gov't can't ban the equipment to do these things, they couldn't possibly manage to ban all the consumeables one might legitimately want to vaporize.
Oh, and it's not too hard to extract nicotine. I know everyone says it is, but it's no harder than what a bunch of ....-heads are doing out in the boonies, and I think most of you guys are smarter than ....-heads

If worse comes to worse you can always make your own liquid, or even just get a larger vaporizer and vaporize straight tobacco at the correct temp for the same effect. Don't worry, the gov't is great at making idiotic laws through the auspices of public paranoia. They're absolutely terrible about enforcing them however.
Oh and to the original poster's comment about you can't beat the government; oh yes we can

If you want to get back to raw numbers, there is a lot more firepower and ordnance in the hands of the American people than the American military and if it came to a revolution giant chunks of the military would side with the people anyway, assuming their cause was good enough. All it takes is for the gov't to go so ridiculously overboard, to get so blatantly self-serving and non-representative that the population is mobilized. They're doing their best to reduce the firepower of the populace for just that reason, but to disarm us completely would be just the kind of trigger needed to incite open and widespread rebellion. So for now we very much can fight the government if they ever go too far. That's the best part about America, it's a self-correcting system
