I think competition always produces better results than a monopoly.
The economy is governed through cartel agreements and monopoly. The attorney general is the one who's controlling funds. There is no free business in Georgia.
As a scientist and successful businessman, I understand that no one has a monopoly on good ideas.
While one party may possess the levers of power, one party does not possess a monopoly on good ideas. Good lawmaking, after all, is about the ability to craft effective solutions.
There are lots of retailers that are now scrambling to emulate the Amazon model, so Amazon does not have a monopoly on same-day distribution or broad selection or low prices. All that said, there are advantages that accrue to the largest player, so I don't see much in the way of Amazon slowing down.
NASA's myriad failures are in many ways the natural consequence of a catastrophic combination of bureaucracy, monopoly, and a calcifying aversion to the kind of risk necessary for innovation.