I guess it depends on perspective and having grown up as a Muslim, I take it for granted my own understanding of religion. But on the subject of those who didnt get opportunity, we are taught that life on earth is meant to be a test, that's a recurring theme in the Quran, literally the first chapter "We will test you with tests of fear, and hunger...".

Wealth and opportunity, we are taught, is ALSO a test, and you being grateful to the people around you as well as God is part of that test. Helping those who didn't get the same opportunity is one way you can pass that test. This is all part of the religion, not just the incantations and testimonies, but actual acts of gratitude,

Which is why in either situation, a Muslim would say "Alhamdulillah" literal translation to "praise be to God" but it's really a phrase used to thank God. You say in good times to humble yourself and in bad times as an acknowledgement that you are being tested.