Answer:
The other reason was to limit the number of special seats to charge a higher price for them.
Step-by-step explanation:
Oakland A's knows that it has a large number of dedicated fans and that they are thirsty for tickets to watch the games, as these tickets are in high demand. In this case, when Oakland A's puts tarps or removes only on 20,000 seats and claims that it is to promote a more intimate experience for fans, it is because it knows that fans will want to occupy these special places, no matter what price they need to pay. In this case, we can say that a probable reason for the existence of these 20,000 unavailable seats is to increase the profit from ticket sales, by charging a higher price for the available seats.