Following verse gives us a foundation for our economic system.
............2:219 وَيَسۡـَٔلُونَكَ مَاذَا يُنفِقُونَ قُلِ ٱلۡعَفۡوَۗ.........
.....They ask you what they should spend, say whatever you can spare.....
This verse tells us to share our bounties with others and does not set any lower or upper limit. Islam does advise us to act in moderation. We can get anything with our available resources but with moderation. Again you have to decide your level of satisfaction and moderation. And of course at the end you will be asked about the bounties you got in this life. After giving us the freedom to choose God has also guided us to the best path.
أَلۡهَٮٰكُمُ ٱلتَّكَاثُرُ (١) حَتَّىٰ زُرۡتُمُ ٱلۡمَقَابِرَ (٢) كَلَّا سَوۡفَ تَعۡلَمُونَ (٣) ثُمَّ كَلَّا سَوۡفَ تَعۡلَمُونَ (٤) كَلَّا لَوۡ تَعۡلَمُونَ عِلۡمَ ٱلۡيَقِينِ (٥) لَتَرَوُنَّ ٱلۡجَحِيمَ (٦) ثُمَّ لَتَرَوُنَّہَا عَيۡنَ ٱلۡيَقِينِ (٧) ثُمَّ لَتُسۡـَٔلُنَّ يَوۡمَٮِٕذٍ عَنِ ٱلنَّعِيمِ (٨
Relentless greed of material gains distracts you [from the real purpose of life. 57:20]
Until you go down to your graves.
Nay! But you will come to know!
Again! You will come to know
Nay, only if you could have certain knowledge.
You would see it now, the Insurmountable Barrier (in the way of your progress).
[29:54, 79:36, 82:16]
Finally, you will see it with sure vision.
Then, on that Day you will be questioned what you did with the boon of life. [21:13]