And there would be literally no demand for it, because the overwhelming majority of people don't care about talking to robots. They already don't have enough time to spend with their children, partners, friends, parents... why would anyone waste time with a fake person?

People don't care about talking with robots because robots aren't able to hold conversations today. A "fake person" is an advantage - it doesn't have needs. It won't manipulate you, it won't think less of you, it won't get angry at you, it won't feel bad because you did something, it has perfect memory and unquestioning loyalty. It's always available. Best of all - if you want it to have the reverse of the above properties, you can always switch it on. Want an arrogant robotic friend? Just go to the settings.

I'm pretty sure most people would prefer robots to humans. Obviously, almost nobody would admit this today.