Yes, programmers keep automating their own work. And we keep trying to find ways to bring in new programmers. But software keeps eating the world. I don't see an end to this. The auto-industry was largely reliant on a very specific vertical.

Also, programmers (unlike auto workers) have not locked in long term benefits that hamstring a company. In fact, we've embraced taking on the risks of the company and staying nimble, hopping around and trying new things. If Google's whole workforce were guaranteed some sort of long term compensation for retirement, we might worry, but their long term promises are only via their stock price.