When Airbus was set up it was with the task to develop a twin aisled aircraft for 300 passengers ( that why it was called A300 ) to compete with DC-10 and L-1011 three engine aircraft, saving money by having only two engines. It was then to go on building successor aircraft and an aircraft larger than 747. The A-320 family was not, IIRC, part of the original plan. Taking over the French/Italian ATR family, the French helicopter industry and EADS military C-235 and C-295 or developing the unfortunate A-400M certainly didn't belong to the plan. The Dutch Fokker company was also a participant in Airbus but hoped to go on building smallish twin engine turboprop and turbofan aircraft. It went bankrupt because of its incompetent management.