It will be like electricity, everyone will use it. Electricity didn't make jobs disappear overall, but its existence was creative destruction in the job market. So many types of jobs wouldn't even exist without it.

Whenever a new tech quickly expands like this it will suck the profit on its own level while creating new opportunities one level above or below. Another example is open source - you can't compete with free, but you can build on it and you can make hardware for it.

So many companies used to make a profit selling closed source apps for what open source gives away for free - they go squashed, but nobody's crying for them, the field is still healthy. Other companies with other job offers will hire the same people.