They need to regulate the nicotine content. In Canada its 2% at least. In the US its pretty much 5% juice only.
5% is 50mg/1ml. A cigarette pack has about 25mg. A geek bar has 16ml of juice = 800mg of nicotine = 32 packs of cigarettes.
Pack a day is considered heavy smoking.
I go through those rechargeable ones in a week. That's pretty common I think for how addictive they are. https://www.reddit.com/r/Vaping/comments/1i9mva3/how_long_do...
Before the disposables were a thing most juices were either 0.3% or 0.6%
This is 100% big tobacco trying to get people hooked
While that does vaguely gesture at an increased nicotine consumption, it's pretty meaningless without the corresponding consumption rates. My gut suspects the average smoker goes through a pack of cigarettes a lot faster than the typical vaper goes through a rechargeable disposable vape.