Is there any evidence it's making any progress into traditional finance? There were a number of projects announced over the past few years but they all seem to have sizzled out or been outright cancelled. Where are you seeing it "eating finance"?
This stuff is brilliant.
If you are using it for tax avoidance or money laundering, it is already illegal.
Ofcourse things are easier to hide if you want to for a while, but how would you turn it into actual money if we are talking large amounts?