The same thing they are already doing? Being a companion for someone who doesn't want to be alone.

The human touch, if you will, is hard to replicate. Even where AI can convincingly act human, that often isn't enough to satisfy what people feel. Just look at the HN guidelines as a perfect example. "HN is for conversation between humans." If it were about the content then any suitable content would be welcome, regardless of the origin, but people are here under the belief that they are making a connection with other people.

Maybe someday AI will replace the business owners and managers too, but so as long as humans control the resources, they will choose to surround themselves with other humans by expending some of those resources towards those other humans.