All social networks tend to be natural monopolies in their niche. Utilities tend to also be ones. What monopolies are you thinking of that aren't natural mono

All social networks tend to be natural monopolies in their niche. Utilities tend to also be ones. What monopolies are you thinking of that aren't natural monopolies. I cannot think of any products/goods/services off the top of my head in which there is only one company offering a version of said product/good/service.