Do you honestly think that our society was more (or as) equal 200 years ago than it is today?
Or even 50 years ago? Even in the 1970s, there were places in the United States that women couldn't get a checking account without a man co-signing on the loan.
We can certainly take issue with how rich countries oppress and exploit poor countries today, but you can't honestly say it is worse today than it was during colonialism.