Thought exercise: what if say, Twitter, wanted to put one of its competitors out of business, and decided to engage in mass creation of accounts/content on that

Thought exercise: what if say, Twitter, wanted to put one of its competitors out of business, and decided to engage in mass creation of accounts/content on that competing platform with the intention of violating their ToS and getting the platform kicked off of their hosting provider. Is this a viable business strategy now? Heck, is this even illegal?