I have always been surprised by the fact that there is not a solid industry of RC articles in the USA (radios, turbines, high-end kits). The argument that it is due to the salaries of workers does not hold, here in Europe the wage costs are higher (workers have more holidays, more social protection paid by the employer, very difficult/costly to terminate the contract of an employee, etc) and nevertheless there are plenty manufacturers of radios (Jeti, Multiplex, Powerbox), turbines (Jetcat / Behotec / Jetsmunt / etc ..) and high-end aircraft (Tomahawk, Pirotti, Paritech, etc).
There must be some other reason than low wages, but I do not know what it is!
Gaspar