It does mean that it will take you longer to receive income. For example I can build 1000 seats and it will take me 8 days. Now the first home game after that 8 days lets say I fill all those seats. I will receive a lot of extra income. On the other hand, you can increase it by 50 seats each expansion and lets say you do fill those seats as well. You only received a tiny extra bit of income. And it will take you a very long time to build those 1000 seats. So you are missing out on thousands of dollars of income every home game.