In response to the Final Airline question.
I am sorry if I offended you, I meant that there might be one final airline in the U.S. As for other counties, they also have their very large airlines. Like British Airways for England, or Air Portugal for your country. Honestly, I do not know of all the airlines in other countries, I mainly study U.S. airlines,and if I were to pursue a career as a pilot which I plan to do, it would have to be a U.S. airline.
If you want to talk further, please e-mail me.