Consider Korea (31k), Taiwan (24k), Finland (48k), Austria (50k), Switzerland (80k), Czechia (23k), Hungary (17k), Slovenia (26k), Estonia (23k), Greece (19k), Lithuania (23k), Latvia (18k), and Cyprus (27k).
Hard to make the case that colonialism is the sole or principal factor that produced the prosperity of any of these countries.
But if it is true that Portugal (23k) is an evil white supremacist economy and Lithuania/Estonia/Czechia/Taiwan (~23k) are virtuous economies, we should study Lithuania, Estonia, Taiwan and Czechia! Great job lads!
Does the Republic of Ireland (#4 per capita GDP) need to pay for United Kingdom of Great Britain and Ireland colonies or does the United Kingdom of Great Britain and Northern Ireland (#21 per capita GDP) need to pay Republic of Ireland?
Is the Ottoman Empire also very bad? Do the Turks need to pay up? The colonialism people seem to pass over them for some reason.