I can't imagine that DDOS are an effective competitive technique? Are people really buying these against their competitors? I would have assumed that they were mostly part of ransom campaigns.
I guess if you run yet-another-dog-food-store and you want to get more business, you target the top 3 competitors whenever they have sales events and at random throughout the year during busy periods. They'll lose custom to you and other stores because customers hate slow/broken sites. Just make sure you don't ddos everyone except yourself. Bit of a give away.
