First, Covid-19 proved that people could work from home just as effectively as they did when they were in the office.
Second, candidates are now demanding remote work. In fact, people that have been asked to return to their offices are opting instead to look for new jobs that will provide them with remote work.
Thirdly, child care is a major factor. For workers with children, remote work allows them to spend time with their kids while saving on the cost of daycare.