However, for-profit day care corporations often exist where the market is sufficiently large or there are government subsidies. For instance, in North America, KinderCare Learning Centers, one of the largest of such companies, has approximately 1,600 centers located in 39 states and the District of Columbia. Bright Horizons Family Solutions another of the largest has over 600 daycare centers. Similarly the Australian government's childcare subsidy has allowed the creation of a large private-sector industry in that country.
More specifically, further research indicates that children being cared for by siblings or similarly-aged children (a trend more commonly seen in agriculturally-based cultural communities) have certain psychological and developmental effects on those being cared for. These effects include but are not limited to: mother-child attachment, emergence of childhood developmental stages, formation of playgroups, development of social responsibility, sex differences, personality differences, cognition, and motivation and performance in the classroom. https://youtu.be/eeCahRCgOfI