On 9 December, BNN Bloomberg reported that illegal betting on sports may approach $1.7 trillion annually and is often used by criminals to launder money, according to a report from the UN Office on Drugs and Crime. It says that the increasing number and types of bets are complicating efforts by law enforcement to squash illegal wagering, as is a proliferation of rogue online operators using cryptocurrencies to disguise who is gambling.

https://www.bnnbloomberg.ca/illegal-sports-betting-nears-1-7-trillion-annually-u-n-says-1.1693602
https://www.unodc.org/res/safeguardingsport/grcs/section-9_html/SPORTS_CORRUPTION_2021_S9.pdf