>>93505690eh, that's fair and true. In the end it just comes down to the creator. Some have really big dreams which does require more money. I'd imagine most of Holo girls have similar expensive dreams, but their goals are more towards stuff like music videos, 3D streams, etc. rather than events or assets.
Mint's said outright that the size she's at is perfect for her because it's manageable without being too crazy, and still able to fund all she needs it to, and I've heard similar statements from other large 3views or 4views.