That is cool. Really nice paint scheme.
My guess as to why there are not many kits of modern planes is cost. Tooling for a newer design is more expensive now and it's a diminishing hobby. Supply and demand.
The other is license royalties. I think that's what it's called. In other words. Guillow's can't just say, 'we like the new Cirrus SR2o, we'll build some kits'. They have to have a license agreement with Cirrus to make a kit based on a Cirrus product. Most companies, not always, want some kind of money for this license agreement. XX number of dollars per kit or whatever.
Military models are different, they fall under a different category: public domain. That's one reason why you see so many military model kits, plus they are just too cool.
Sorry for the long explanation. I think the Wright Flyer would be a fun model to build.