I'm not personally too sure on the claims of renewables (in your example, specifically wind) being able to compete with Natl Gas and so on. But yeah, seems like renewables are going to have to innovate b/c the tap on government money has stopped (and will most likely stay stopped if Trump stays in office)
Wind can't completely replace NG power plants because of its intermittent nature so barring a major breakthrough in energy storage we will probably need at least the peak load natural gas power plants for a long time.
It is however price-competitive in some regions and can be installed in smaller capacities. And it's still evolving. There's some witchcraft with pitch control and remote wind gust sensors and radar and stuff like that, which allows raising capacity by reusing most of the existing infrastructure, not to mention just building larger towers and blades from some future magic materials. Combined cycle NG power plants can reach ~60% efficiency and that technology is quite old - probably not much room for improvement remains beyond that.