Oh, dear! Once we realise that this parable is about the coming kingdom of God, whose King is Christ Jesus, then any suggestion that “the king was angry and greedy” should ring spiritual alarm bells! The parable contains warnings that Christians should heed, but trying to “soft-pedal” the message simply detracts from the reality that if we claim to be subjects of the coming King, then we have a responsibility to give him of our very best.
Remember that it is the nobleman who leaves in order to be made King. During his absence his servants are given responsibility for making a financial profit on the money he gives them. When the nobleman returns, he has become King. Jesus was on his way to Jerusalem, knowing full well that he was going to die there (Luke 18:33). He used this parable to show that the long-awaited kingdom was not going to happen any time soon, that it was some time future. During the absence of the nobleman his servants and his subjects react differently. Here is one take on the parable:
In this parable, Jesus teaches several things about the Millennial Kingdom and the time leading up to it. As Luke 19:11 indicates, Jesus’ most basic point is that the kingdom was not going to appear immediately. There would be a period of time, during which the king would be absent, before the kingdom would be set up.
The nobleman in the parable is Jesus, who left this world but who will return as King some day. The servants the king charges with a task represent followers of Jesus. The Lord has given us a valuable commission, and we must be faithful to serve Him until He returns. Upon His return, Jesus will ascertain the faithfulness of His own people (see Romans 14:10–12). There is work to be done (John 9:4), and we must use what God has given us for His glory. There are promised rewards for those who are faithful in their charge. Source: https://www.gotquestions.org/parable-ten-minas.html
The moral of the story is that when Christ Jesus returns as King he will judge those who scorn and reject Him but reward those who faithfully and gladly obey His instructions.