My favorite flower shop is out of business.我最喜欢的花店停业了。

Small grocery stores are being driven/forced/put out of business by large stores. [=small grocery stores cannot compete with large stores and so are closing permanently]一些小杂货店因遭受大商店的挤压而关闭。

The store has gone out of business. [=has closed]这家商店已经停业了。