To have risk, all you have to do is nothing. Life is risky. The odds of it resulting in death are 100%. Before that final event, plenty of unpleasantness is also going to happen.
How do we escape the risk? How do we protect ourselves and our assets? Whatever else the answer to these questions might be, part of the answer is we have to pay. Obtaining safety costs. The more safety we want, the higher the price.
Consider the risk of getting bitten by a shark. The risk of the shark biting us is zero as long as we stay out of the ocean where sharks live. The risk only arises when we enter the water. The first potential cost of risk avoidance is giving up the freedom to swim with the sharks. Surrendering freedom is not always an attractive option, and has its own costs.
So what if we want the freedom to swim in the ocean without the risk of shark bites? Certain levels of such risk may be relatively inexpensive to mitigate. We can stay behind natural barriers so the sharks can't get to us. We can erect artificial barriers where what nature has provided is inadequate.
But let's say we wanted to make the entire ocean completely and totally free from the risk of anyone ever getting bitten by a shark no matter where they swim. Now the price is huge. We have to kill all the sharks, and drive them into extinction. Not only is such an undertaking in and of itself massively expensive, it will have consequences with their own costs. Driving a species to extinction would disrupt the ecosystem and could compound the cost almost infinitely.
Eliminating risk is like an asymptote - the mathematical concept of a curve approaching a line, but never arriving.
Risk is Free, Safety is Expensive