In a remarkable turnaround, the tiny South American country of Guyana, once one of the continent’s poorest nations, now ranks among the world’s top 10 wealthiest countries by gross domestic product (GDP) per capita. In a mere decade, Guyana went from first discovery to be lifting nearly 900,000 barrels of crude oil per day from the prolific 6.6-million-acre Stabroek Block. This, despite the lopsided deal favoring the ExxonMobil-led consortium, which controls the oil acreage, has delivered a massive economic windfall. There are concerns…