I think there are instances in time during which a 'violent' change of adoption can take place, where suddenly everyone stops using a service and replaces it wi

I think there are instances in time during which a 'violent' change of adoption can take place, where suddenly everyone stops using a service and replaces it with another. Facebook did replace of Myspace. Facebook has been replaced in countries where it has been blocked. If Facebook were to break (extended downtime), face too large a scandal, be obviated by a social network on the 'post-Web' platform Facebook was too late to get onto, or whatever else there could be a sudden shift in the monopoly holder. There may have been an instant where Google+ could have, under the right alignment of stars, inherited this monopoly. Larger point being made above is that it's successors of monopolies, like a kingship, not proper market competition with multiple simultaneous informed-consumer choice.