Oh, no!  And it's not meant to be there now either!!!  Your investment is absolutely just for funding the bankroll.  I put it there in my local copy of the file while discussing ideas with investors in the on-site chat and accidentally left it there after we had decided that it wasn't reasonable.  Then uploaded the file when I fixed a typo elsewhere in the file.

What I ended up doing to cover the case where I need more to pay for the site is mention that the commission rate can be changed with 7 days' clear notice.

Thanks for spotting this!