Incumbents are governments, and government's favorite thing to do is increase economic output so as to increase tax revenue among other things, so I'd expect governments to find way to incentivize launches.

As far as how long it will take, it didn't take long for a single company to revolutionize the industry, I expect that those that want to keep up will fill the gap. It's honestly probably going to be mostly new names, some of which we have not heard of yet.