Some big things people are failing to realize about being drug free (xanax free), it's only cheaper if you don't care to be competitive battle wise in the long run, past the 1BN mark.
Drugs costs, and risks of using drugs, along with costs of rehab are a joke and you can complete negate all of it in some shape or form.
Banking 2billion over 2 months results in 1.8billion a year, the rest of the 2.2 billion (if you needed 4BN a year to rehab) is basically attainable through flower running.
Even if you are at the rehab cap (8m) and xanax were to somehow go up in price to 1m, then its still 9m/250E = $36k per 1 point of energy which is the cheapest source of energy in the game (after refills which basically don't count because they apply to both druggies and drug free). If you factor in an OD rate of 13% that still won't add another 20k per energy cost and your talking about people who have taken 2k + xanax with absolutely no hermetic.
Also remember cans have a cd so max daily is 12 cans or 390 E using the most expensive option meaning someone using 2 xanax would take a non druggie at least 1 FHC in a daily regimen. (which is a huge increase in costs)
Druggies have access to every other form of energy boosts in the game, going drug free negates the best +E option and will you will have to play catch up using much more expensive alternatives earlier on.
To even use 3,000 Xanax in the shortest amount of time now takes 1000 days. A more realistic figure would be 2 a day meaning you'd take over 4 years to even get close to the rehab cap people are talking about.
Lets say in the 4 years of xanax player A takes the drug free player saves 4 bil a year or 16 billion. 16 billion buys you 14,545 cans of munster @ a price of $1.1m or 290,900 Energy which is the next cheapest form of energy since at this point Both players would be using a refill every day w/ a DP. (and yes it doesn't matter if you use drugs because refills are available to everyone)
3,000 Xanax is 750k Energy or 652,500 after 13% OD rate. Leading to a difference of 361,600 advantage a drug user has
A player would have to completely stop taking xanax, for someone with a the Sports Science lab to get to their battle stat range and even then it would take over 2 years on the drug free players part.
Once you start figuring in SE's this difference grows larger in part that a drug user will simply attain the 1BN+ stats faster than a drug free player will to make them cost effective.
To put things in perspective you'd have to unlock Sports Science lab in the shortest amount of time, make 2 billion bank asap, then make even more money than a typical xanax user to open up options of using as many cans of energy as possible or if you really want to be better than a druggie use really expensive FHC's but then again if a druggie has all those options aside from the Gym....well don't get your hopes up too much if they can make as much money as you.
*cough* mugging *cough* which is a bit catch-22 since you need you know....higher battle stats.
Drugs would have to seriously get nerfed to crap or rehab costs ramped up to more than twice what they are now before anyone really has to worry about drug free gym giving anyone a serious advantage don't worry :P
The only reasons really anyone should choose not to use Xanax is if they are lazy and don't want to earn a 2 BN bank, don't like flying, think the gym is cool, or want to have an easier way to balance stats efficiently. I don't expect attacking 2.0 changes to make non-drug users any better than they are now since being balanced is and will continue to be better with xanax gains regardless.