Before I retired, I spent much of my working life in industries that were impacted greatly by new government regulations. For the record, none were under Food and Drug. One industry was a bit similar in that it had been unregulated and new regulations changes the entire makeup of it. MANY companies shut their doors. Some NEEDED to do that as they were...shall we say, less than honorable. Most however were doing exactly what they promised to do and because they had not made obscene amounts of money by being crooks, could not afford all that was now required and make their services affordable for consumers, must less keep their doors open. The "bad apples" -who were VERY bad, had made the entire industry a target for regulation. In both instances, things done BEFORE the law went into effect, as long as they were not in violation of laws existing at the time of their creation were exempt. If that holds out for this, I would think manufacturing will ramp up significantly before the law goes into effect. For consumers of e juice, I would think our best move would be to either stockpile the things we can and hope for the best.
I am OLD. it's one of the reasons I am learning DYI skills, I can probably stockpile enough nicotine to see me to my end. I believe that only the nic used in the juice will covered by regulations, not flavorings , PG or VG. As for equipment - pipes and items of that nature did not increase in costs in the same manner as cigarettes and tobacco.
The government has an endless supply of attorneys. They will win this battle. How harsh the rules will be is still an unknown. Once the dust settles, the industry that will benefit the most will be BIG TOBACCO. It is my opinion that big tobacco pushed for this, behind closed doors and by poking the bears. I have not seen reports of poisoned juice, recalls for bacteria or other things that would normally attract the feds. I believe big tobacco have their R & D people working now to replicate their brands and flavors into e-juice and creating more. It is likely their lobbyists are working hard at insuring the law is written in a manner beneficial to them. Again, I have seen that in action. A large portion of one of the laws I saw enacted was almost word for word taken from one of the opposing industries proposals.
Obviously, taxes and other costs will pass onto consumers. A bottle of e-juice is likely to be priced at a similar cost of a pack of analogs. Sadly, many of the flavors we have come to love will disappear as those who create them simply will not be able to afford to meet all that the law will require of them. And, if like analogs we will be unable to purchase them via the internet by mail, we will be limited to whatever is available in our own area. Stores will close. Sites will be closed. Many will lose their jobs.
I hope i am wrong. But, I've been there and seen that. I will pray for the best but prepare for the worst.