DislikedBlah blah blah. Lots of talk.. lots of bs as always. 20% is easily doable on standard account sizes and credible brokers (certainly no MT one and even more certain no 4 letter bullshit broker). If you are consistent and compound you will easily hit that with a proper strategy. You will however not become a billionaire with it. The reason is not because it's not doable but liquidity. You will hit liquidity problems pretty soon (before even hitting the 7 digit mark) and along with the partial fills increasing costs (spread / partial fill throughout...Ignored
So the strategys you are talking about seems to be ultra short scalping, otherwise I cant imagine how liquidity could affect it.