That's what the term means. It's an unavoidable monopoly. You can always go to a socialist country instead if you can get a passport in time before you die.
Monopoly is not unavoidable. If this is the case, counties and dynasty will last forever rather than fade into history and being replaced by a better managed country/dynasty.
Very true. Many monopolies only last a few normal human lifetimes. I'm glad your immortality is working out for you.
Technology advancement speed up the process of downfall.
Technology progress creates monopolies. Look at mining pools. The superior efficiencies give the most payout, that's how monopolies are born. Oil companies may change names, but the same families are running the companies for many decades. Companies like TI and IBM own so many patents, they monopolize technology development. Revolution speeds up the process of downfall, but we're a long way from that.
Monopoly is fine if the company is providing an efficient and superior service.