They are not going to go full scale in a city like Buffalo. They will use the smaller versions, which means they need to make decisions on what will generate the most revenue. To put in pool tables, you need to remove something. My guess is that the games bring in more then the pool tables. IIRC, you pay by the game with pool. Well, you can take your time playing and it does not matter how many people play. The cost is the same. With the games, however, you need to pay for each person playing. Plus, you cannot take your time playing. The game dictates the pace, not the player.
Seems like a simple business decision to me.
You make a good point in your post. Be thankful that they are coming to Buffalo at all. Once they are there, support the place. If they receive enough support, then you can talk to them about expanding to include pool tables.