My

Once the market is owned by BT, they will demonize every non BT
vaping product.
A media campaign insinuating Chinese products, especially
juice, may potentially be infected with corona virus.
More black market "mishaps" (real or media fabricated) to reinforce the NEED for tighter regulations and to discourage the general public from even considering DIY.
Caffeine, despite causing more deaths than nicotine, will remain America's favorite drug and it will continue to be perfectly fine to give a 3 year old a sip of Coke. If that same child hits a much less harmful vape, once; time to call CPS!
Cheers
I