Do you know what are the most common targets of DDoS-for-hire services (apart from other DDoS-for-hire services)? Unregulated online industries that move a lot of money, and that stop moving much money at all when they get attacked (and are thus particularly vulnerable to financial extortion):.

-Gambling
-Gaming (think Minecraft)
-Crypto

I can think of one industry in particular that fits this description and is highly dependent on uptime: AI. All of these companies have to have a giant target on their backs.