Collective Bargaining is Especially Necessary in the Case of Natural Monopolies  Many public industries exist as public industries because they are natural monopolies. For example, rail travel, which is often public in Western Liberal democracies, is a sector in which it makes no sense to build multiple railway lines across the country, each for a different company, when one would simply be more efficient. A similar case can be made for things such as public utilities. As such, these sectors often only have a single, often public company working in that sector.  In the case where there is a monopolist, the workers in the sector often have no other employers that they can reasonably find that require their skills, so for example, teachers are very well qualified to teach, however, are possibly not as qualified to deal with other areas and as such will find difficulty moving to another profession. As such, the monopolist in this area has the power to set wages without losing a significant number of employees. Further, in many of these industries strike action will not be used, for example because teachers have a vocational, almost fiduciary relationship with their students and don’t wish to see them lose out due to a strike. [1]  [1] “Monopoly Power.”