Well, most of the things you enjoy today were at some point created by entrepreneurs starting companies; whether VC-funded startups (or whatever we called them in the past) or regular companies. There is a strong indication that the easier it is to start a profitable business, the more people will do so, create new products and services, and thus improve standards of living.
But there need to be boundaries, because not every business model is good for society. As a thought experiment for those thinking it's better to have deregulated startups in high-tech industry, imagine taking down biosafety regulations. Think of all the biotech startups blooming...