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[A Christmas Carol] Why did Scrooge get a chance at Redemption when Jacob Marley didn’t?

Jacob Marley seems to be guilty of greed and selfishness just like Scrooge. Literally chained to it. Presumably he never had an opportunity to travel with the Christmas spirits like Scrooge did. 

Did jacob have to make deals with the Christmas spirits to give Scrooge a chance? If so, what did the spirits get out of the deal?

Was Jacob free’d from his shackles due to the selflessness he showed in caring about his friends fate?
gpt
The book (though it often gets cut from stage adaptations) confirms Scrooge was the only person who cared about Marley. He was “his sole executor, his sole administrator, his sole assign, his sole residuary legatee, his sole friend and his sole mourner.” And even then the main emotion Scrooge feels towards Marley’s death is smug that he got a good deal on the funeral arrangements. 

Bluntly, Marley couldn’t be saved. He had no family or old friends who would have welcomed his change of heart, he was too far gone.

Edit: Though it’s worth noting that Marley is not wholly doomed. Sure he’s a chain-toting ghost now, but he pretty clearly states that he’s currently paying his penance by wandering the earth in death like he never did in life. It’s possible helping save Scrooge has shaved some wandering off Marley’s sentence.