It's hardly a new idea. For example, the catechism of the Catholic Church has this to say about it:
With creation, God does not abandon his creatures to themselves. He not only gives them being and existence, but also, and at every moment, upholds and sustains them in being ...
Similarly Calvin in his commentary on the Epistle to the Hebrews: "All things would instantly come to nothing, were they not sustained by his power."