I have to disagree with that statement. This verse out of context appears to support what you are saying, but within the context, it is speaking about knowledge of the kingdom of God.
Matthew 13:10-13
10 The disciples came to him and asked, “Why do you speak to the people in parables?”
11 He replied, “Because the knowledge of the secrets of the kingdom of heaven has been given to you, but not to them. 12 Whoever has will be given more, and they will have an abundance. Whoever does not have, even what they have will be taken from them. 13 This is why I speak to them in parables:
“Though seeing, they do not see;
though hearing, they do not hear or understand.
The proceeding 9 verses in Matthew 13 (Parable of the Sower) does contain a principle that could be used to explain why some find it difficult to earn money. You could say they are not sowing enough seeds to receive what they want, or sowing in the wrong places.
Essentially, a person will be paid for the amount of value that they provide to others. If you want to make more you have to provide more value to more people.
Just my #twocents take it or leave it.