That said, it doesn’t mean that there aren’t reliable estimates. Records are too disparate to paint an entirely accurate picture. There is no definitive resource, from nation to nation, that researchers can solidly rely on. It’s important to recognize that the overall size of the sports betting market is difficult to estimate because regulations and record-keeping are inconsistent. How Massive Is the Sports Betting Market? In this article, we’ll lay out the overall size of the global sports betting market, explore some projections for its future growth, and try to pin down the root causes of this rapid market expansion. With the digital revolution in full swing, the sports betting industry continues to undergo dynamic changes, expanding in established markets and forging its way into new ones. In fact, it’s one of the fastest-growing sectors in the world, offering tremendous potential for both sportsbooks and bettors. The global sports betting market continues to surge in popularity.