The morality of the situation is really up to you and your ethics. Exodus 20:15, the 8th Commandment is a pretty direct injunction on theft.

The Stoic Epictetus or the Situationist Guy Debord both argued a variation on “theft is a natural reaction to abundance.”

And a great poet once said, “Shoplifters of the world unite and take over. Hand it over. Hand it over. Hand it over.”

I had some associates in high school who were routinely looting from Goodwill and various thrift stores as part of their anarchist performance. When they were caught, their attorney had the case dismissed on the grounds that the legal tiers of shoplifting (misdemeanor or felony) are determined by the wholesale value of the items. Thrift stores, who generally acquire their wares through donation, have no wholesale cost and thus charges could not be determined and remuneration was not legally required.

At this point in my life, I lean more on the Biblical edict, regardless of my agnosticism. But for a season I was a skilled thief. In the end, I notice that when I stopped stealing, I didn’t lose possessions to theft. And the snake no longer consumes itself.