Here's an idea for a company...keep in mind this is pure evil and no one should actually do it.
Setup automation to bombard all of your local competitors with fake leads including, responses, return calls...everything. Watch as they melt down as their conversion rates plummet. They start thinking every customer is not interested, they try every sales technique, pay for training, start replacing sales people, bdc teams, managers...a death spiral of bad morale. Tune it right up to the point before they think it's as a result of a bad actor, like the allies in WW2 after they cracked enigma.
I am certain this has and is being done in most industries but with all the tools today you could make it almost perfect.