Please make the following in red clear for me.
Ultimately, though, this chapter isn't about the X PRIZE---that isn't the point. The point is that incentive prizes have a three-hundred-year track record of driving progress and accelerating change. They are a great way to steer toward the future we really want. So start your own. Help with ours. Whatever.
is the above saying "start your own incentive prize. Help with our incentive prize"?
Remember - correct capitalisation, punctuation and spacing make posts much easier to read.