Explain why the wide$-$bodied segment of the large commercial jet aircraft industry can only profitably support two players at present. What are the implications of your answer for barriers to entry into this segment?

Are entry barriers into the narrow$-$bodied segment the same as those into the wide$-$bodied segment? Explain your answer?

Given future projections for demand, how do you think the industry as a whole will do over the next twenty years? How might your forecast differ for the wide$-$bodied and narrow$-$bodied segments?

If you were a new entrant into the bottom part of the narrow$-$bodied industry, what would be your long$-$term development strategy?

Why did Boeing and Airbus enter into partnerships with Embraer and Bombardier? What was the strategic thinking here? Why do you think Embraer and Bombardier agreed to these deals?

What can Boeing and Airbus do to deter further entry into this industry, and$/$or keep new entrants boxed into the bottom end of the market $($that is$,$ smaller, narrow$-$bodied jets$)?$