Ransomeware payouts are reaching levels of $25 million, or more, according to researchers Google, Chainalysis, UC San Diego, and the NYU Tandon School of Engineering.
Clearly, it's lucrative to the attackers, and a lot safer than robbing a bank.
By following those payments through the blockchain and comparing them against known samples, researchers were able to build a comprehensive picture of the ransomware ecosystem. Ransomware Payouts Reach More than $25 Million [theverge.com]
Of course, the figures may be much more than this, but either way, it's still a significant sum.