[Matthew]

With each new ballpark, things were improved. Newer technology was used, architects found new ways to generate revenue, new luxury seating ideas were introduced, and architects found new ways to entertain fans. A ballpark from 20 years ago may be nowhere near the league average. You may need more room to add the latest seats or some new luxury feature to keep up. It's reached the point where a 20 year old ballpark can become outdated.