Most of the larger companies is are traded publicly on the share market which means that the senior management and directors have a responsibility to the shareholders to return the maximum return on their investment through either dividend payments or an increase in the value of their investment.
The only way around this is to have government owned enterprises, or otherwise privately owned companies getting the contracts.
Even if you have an interested Billionaire involved and willing to make minimal profit on an enterprise, you are relying on them to remain interested, their financial situation to not change, and their heirs or successors to have the same mindset.
Government owned enterprise may be the correct way forward, as long as there is a commitment to maintain funding and capability across both sides of parliament and not let it degrade.