Most 'monopolies' that exist today are artificial - This is because they are only monopolies to the extent that they are able to: 1. Keep buying up advertising

Most 'monopolies' that exist today are artificial - This is because they are only monopolies to the extent that they are able to: 1. Keep buying up advertising to make sure that any potential competitor cannot afford eyeballs. 2. Keep hiring up as much technical talent as possible to make sure that any potential competitor doesn't get access to that talent in order to build a competing product. 3. Keep subsidising the cost of their own services (at a loss to themselves) in order to make the market non-viable for any potential competitor. It's a scorched-earth approach. Any company that has the money can create an artificial monopoly for themselves by engaging in any of the three activities above. However, those activities are increasingly expensive because they drive up advertising costs and engineer salaries. If companies keep doing this, eventually, they'll make the market non-viable even for themselves.