Surely everyone remembers POTUS repeating many times during the campaign about the "under budget and on time" way he ran his campaign.
He told of small donations from we the people and how little (over-all) he had to invest.
The point is that he did not need to use campaign $$$ - he would certainly use his own $$$ which he had every right to do.
THE major reason he is not influenced or beholden to the cabal.
He doesn't need their $$$.