From a technological standpoint, I'm not so sure. To make an effective, portable vaping device, you kinda need lithium-ion batteries. No other battery tech is able to provide the necessary power while also delivering reasonable capacity, and Li-ion battery tech wasn't widely available until the turn of the century.Lessifer, I agree with you too, actually. The deeming issue and handing vaping over to FDA/BT is not fair. They didn't develop those products. In FACT, they could have done vaping for ages, one of my pdocs in '99 (while soulfully staring at me sadly and recommending prescription nicotine device, I think one of the throat or nose sprays) after turning me down flat for Chantix, said this, "You know, back in the 60s, tobacco makers got together and investigated non-burning products due to the fact that so many smokers would be hearing negative data, could have easily-- and did investigate-- these products before turning them down thinking the market wouldn't want to deal with them.
Now tethered to an AC outlet (or the 12V available in a car) would have been no problem for many decades, but I do not think that tethered would have been well-accepted.
Several decades ago, BT did try Heat-not-Burn where the heat was supplied by a burning charcoal pellet because battery tech wasn't up to the job. This was a major flop. Now the're back with Li-ion battery powered devices like iQOS, which have been quite successful in some markets...