It is my understanding that BCs have a certain special temporal utility, which enables its users like Saro, to satisfy one need: To become more independent from flawed government money scheme that they (rightly) feel rips them off and suppresses all other attempts of commodity backed private money. The higher the pressure of deception becomes the higher the urge to find different ways to trade.
The flaw in BCs is that they need the very entity that they want to circumvent. If the above mentioned preconditions intensify I consider it possible that the use of BCs gains traction. But I only see dead ends for it at a certain point:
A: The monetary system of the government becomes sound again, so this special utility vanishes.
B: The government hijacks BC and integrates it into its structure, which means it is nothing more like Pay Pal etc. (I don’t know if technical possible, if not A,C or D will apply)
C: The government declares it illegal and fights it actively and throws its users into jail (as described in an earlier post you cannot do large business without the IRS noticing it)
D: The government stops to suppress private money. In this case the special utility vanishes as well and other commodity backed private currencies would outgrow BC easily.
A and C do not exclude one another.
It’s a bit like prisoners who develop their own secret sign language to communicate within the prison in a concealed way because the guards control and restrict what they want to say. Outside of the prison they would immediately stop using it, and it would be very unrealistic to believe that this will become the new main language outside or within the prison. Though within the prison, it might be quite useful if done not too conspicuously.