So how do these new bots make money?

One thing I'm rather curious about is how the new batch of bots get monetized. A lot of them seem to be... generic buzz creators like... "hey why is brand Z not talked about more?? "

And yeah,  clearly they are either automated or at least, not sincere.  I'm curious how they get paid though.  I mean, if you are a reputable manufacturer of consumer goods, do you pay for stuff like that??