Self Replicating Assemblers: your thoughts?

Let's keep this simple.

Say a company or the government lab created a machine that can take carbon and silicon and other atoms, and make unlimited copies of itself, and, manufacture other material objects, like clothes, computers, tools, houses, vehicles from those atoms.

And it is dirt cheap because one can make trillions of copies as long as they have raw materials which are atoms so tbey are everywhere, and energy from the sun and water.

How would this change life?