Coppersmith with Counting House

I had recently thought about the Coppersmith - Counting House Combo and tried to set up a game to make that work. The Black Market deck was filled only with the cards from Intrigue and was played with Colonies. My Father-in-law (without my suggestion) took the Coppersmith - Counting House Strategy and with the help of the Worker's Village and Council Room quickly bought two Colonies. Then he began to stall. My Mother-in-law (who doesn't quite understand all the complexities of the game, yet) went for the Black Market strategy, fishing for something good. The game ended when I Throne Roomed a King's Court and played my Council Room first (drawing 12) and then the Workers Villiage, after a few more Worker's Villages and another Council Room I was then able to King's Court a Bridge (which i was lucky enough to find on the Black Market Very early in the game (and only black market purchase)). I ended up with 7 banks, along with my other treasure I had 78 coins to split among 10 buys where everything was 3 coins less. GAME OVER.