MWhere there is a lucrative and profitable market, there will always be some form of supply, both formal and black market.
At the end of the day, steroids are no more than man made chemical compounds derived from natural sources and refined through chemical process.
Pretending like the sky is falling because you think suddenly the means or will to produce these drugs may suddenly disappear is not only naive, but also foolish.
Because as long as the demand for them exists, and the natural material to manufacture them is available, then individuals will find a way to produce and sell them.
Anabolic steroids are no more likely to disappear from the earth, than is crystal methamphetamine or Cocain or heroin.
Not b as long as a market for them exists.