Just look at Daytona speedway, Yes it's sort of apples and oranges but they saw the writing on the wall attendance wise and totally revamped the stands. Bigger seats, less of same, much improved access to the seats, better restrooms etc. They dropped from being able to seat roughly 175K to just over 101K. And that grandstand is a mile long. But they damn sure haven't dropped ticket prices.
Our family has had 12 tickets since the early 90's but may drop them because they're just too damned expensive, Add to that higher speedway camp ground charges just not worth it