Depending upon your preferences, these ad settings can be modified.
If you want to monetize your hub, then it should be for commercial purposes. Mark that setting.
Moreover, the level or density of ads can also be edited by you. Low, Medium or High level of ads can be shown in your hub, as per selected.
However, one thing that you do not have control on is the placement of ads. You 'technically' can alter the placement by placing photos, videos, etc.
I hope I have made it clear.