2. Lack of competition- really? we have 4 national airlines (AA,DL,UA,WN) that have a balanced national domestic route map. We also have two large regional airlines (AS,B6) west and east coast centric route maps. ULCC Spirit airlines, allegiant airlines and maybe another I'm forgetting.
Lack of competition I don't think so. We just have a very well-balanced airline route map in the country and airfares are as low as they were 15 to 20 years ago.
The US , China and Europe are roughly the same square mileage (3.7 million, 3.7 million vs 3.9 million)
Europe has EI, BA, IB, LH, SN, LX, AY, AZ, AF, KL, LO, TP, OS, SK as major long-haul international flag carrier airlines. Not to mention a number of LCC's and ULCCs.
China has CA, MU, CZ, HU, MF, FM, ZH, and CX/BR if you want to include legal Chinese territories along with a number of smaller international and domestic airlines.
The US has AA, DL, UA, and WN, along with a few small regional players (Alaska/Virgin and Jet Blue) and 2 main ULCC's (F9 and NK)
You can't tell me that the US has competition.