Bitcoin study

Bitcoin study:

Gov's cut at the moment is 0%
The house's cut is apparently at most 0.25% per trade. I haven't researched enough but the wallet I use has a max of 0.25% and gets to 0.10% for a lot of volume.
In poker the house's cut is 5% per trade. Therefore in poker there has to be a massive edge for you against the fish in order for the biz to be profitable. Playing a weaker professional is not enough, the skill edge is not enough to beat the house's cut(rake)

Poker and money related biz - who is THE FISH in the system?

I haven't taken any financial courses/schools.
My thoughts are simply extending my poker knowledge as a regular winner over 9 years to normal life and businesses.