A large portion of the health insurance market, particularly in developed nations like the US, is devoted to group market policies, which are essentially health insurance plans that companies sell to their workers. Nevertheless, the status of the model as the "leading" option might differ from one nation to another, as can demographic shifts and changing market conditions.
Incidence in the United States: Health insurance in the group market is quite prevalent in the US. A sizable chunk of the population has health coverage provided by their jobs. As a consequence of economies of scale, this model often offers greater coverage at lower prices than individual policies.
Finally, although the group market does well in some settings (especially the US), it is far from being the only or even most dominant model anywhere or in any industry. Health insurance models can differ greatly according on cultural preferences, healthcare infrastructure, and national policies.