A natural monopoly is when an industry is difficult to break into, making competition difficult or impossible. This favors incumbents, in fact, a lot of industries are natural monopolies (pharma, aerospace, chip production).
The difficulty of breaking into an industry may be because:
- new players cannot compete with established scale
- start up costs require a nearly all-or-nothing approach, high risk
- regulations tie the hand of new innovators
You can read more into Karl Popper’s Paradox of Tolerance if you want to harden your philosophical position for what you have described.