It seems like it ought to be called "cancellation" only when a relatively small number of people cause the artist/speaker to go silent. If the vast majority of

It seems like it ought to be called "cancellation" only when a relatively small number of people cause the artist/speaker to go silent. If the vast majority of their audience vanishes, then nobody in particular has done anything to them. But it might be hard to distinguish those two cases -- a few clubs/publishers/etc. might refuse to book you, and that could cause your audience to dry up.