Actually, would you agree that we were born anarchists? You don't adopt the government religion and obey your leaders until you are taught to do so.
Anarchy literally means "without rulers". Nothing more. True anarchists do not promote violence, vandalism or aggression. They live by the Non-Aggression Principle (NAP), voluntary interactions and peaceful parenting.
If you want to invent a new product and earn money from it, you should have the right to do so unabated. But, when the "leaders" you vote for tell you that you need their permission, it only gets worse from there, stifling innovation, not encouraging it.
"you tax yourself" - that is correct, I voluntarily pay a fee to buy a product or service, from the fruits of my labour. i tax myself when i plant this years radishes. i tax myself if i am forced to defend myself as well, but never aggressing.
A real beauty of free markets is that you have a choice. In an extortion system (the mkultra religion (aka government)) you will always lose your choices. The choices they grant you always end in tyranny and death. Always.
In a world of abundance and no more false-scarcity, security no longer becomes such a requirement. So the "my gun is bigger" argument is null when funds can no longer be stolen from the people (think decentralised cryptos, multisig etc). We all have enough at that point and anyone who comes along and tries to get you to agree again to be extorted will just be cut off from society. Reminds of that movie "The Village".
"Only if there are laws and enforcement to allow competition" - Why do you want any laws to allow you to compete? That is your human right. Just like in nature. You build a cool water bottle which you think is better than his water bottle. If the market likes yours better, they will buy it and his water bottle will disappear.
This is the very nature of true free-markets. It encourages efficiency, choices, affordability, beauty and freedom.
Monopolies form today not because their product was so much better than their competition, but because of theft, your taxes and corruption. Look into GE, News Corp, Disney, Apple and so on. Corporations and Governments have virtually become one in the same thing.
If a water bottle monopoly forms in a true free-market, it is because that is the un-coerced choice that the masses have made.