While time will tell, if "AI" brings us a beneficial application, you can safely bet against a lot of industries, since the destructive uses are already proven. So far AI excels only in human mimicry, which strongly enables abuse and exploitation, but has little legitimate value.
Spam and fishing will break basically everything without authentication. Youtube and Google search are already half broken because of AI spam. Dating Apps will break, comment sections will break, the web is gonna break for the most part... Not looking good for classic telecommunication either, since you can't trust messages and calls anymore.