Once could make it 3 CPU's vs a person.
Like this:
https://cardgames.io/hearts/The only thing they (the house) would need to do is be provably fair and have a database that can handle scores per player account and how many bitcoins they have won/lost.
First thing it is not easy as you think to make a new probably fair card game from scratch.
Second thing, cardgames.io games are not open source so no-one other than the admin have access to game scripts they have.
Also they provide most of their game for fun and when there will be money involved in between, script need to go through lots of tests before launch.