I am not actually trying to compare apple - to - apple here, this is so worthy to read. Most countries listed below have a very long reserve life (the amount of years they have till the oil is finished), and they have a low population compared to their oil reserve. Hence, they can cater to their own needs without any bother to the supply. Actually, doing some research can do wonders instead of blaming others.
UAE
Population : 4,380,000
Oil Reserve : 97 billion barrels
Production rate : 2.5 million barrels per day
Reserve life : 107 years
KUWAIT
Population : 2,851,000
Oil Reserve : 99 billion barrels
Production rate : 2.5 million barrels per day
Reserve life : 108 years
SAUDI ARABIA
Population : 24,735,000
Oil Reserve : 260 billion barrels
Production rate : 8.8 million barrels per day
Reserve life : 81 years
IRAN
Population : 71,208,000
Oil Reserve : 136 billion barrels
Production rate : 3.9 million barrels per day
Reserve life : 74 years
NIGERIA
Population : 148,093,000
Oil Reserve : 36.2 billion barrels
Production rate : 2.3 million barrels per day
Reserve life : 43 years
VENEZUELA
Population : 27,877,000
Oil Reserve : 80 billion barrels
Production rate : 2.4 million barrels per day
Reserve life : 91 years
MALAYSIA
Population : 27,452,091
Oil Reserve : 4.8 billion barrels
Production rate : 550,000 barrels per day
Reserve life : 33 years