why start a new airline when there are ready made ones ready to start back up.
Because many are pension schemes with massive deficits and a marginally profitable airline on the side. Start a new airline and you eliminated one of the major costs. e.g.
https://www.ipe.com/british-airways-...034124.article
https://www.pionline.com/article/201...ce-new-dc-plan
https://www.ft.com/content/249be7da-...6-b9ccc4c4dbbb