Quote from tdev:
Still, this does not answer the question why there is an asymmetry between stock market and forex in terms of supply of automatic trading strategies.
Because stock trading is not accessible to everyone like fx spot. To trade stocks you need to have money (no leverage) and be serious about it if you don't want to lose all your money right away while with fx spot every kid on the block with literally 5$ in his pocket can trade currencies because of the leverage offered on the market (trading cents or even less) hence the popularity (community->tools).
