This is a great business plan.
Since downdetector has been bought, we can make a new site, where people can bet on what sites will be down. The whole market can be automated fairly easily to check whether a given website is responding.
This should divert a substantial proportion of the world's DDoS capacity.
This made me think of another idea for you/us:
Bet on which companies will be hacked next! Divert some hacker capacity…