Which bring me to another question: Are there any airplane manufacturers making a three engine aircraft? If not - Why? Are there disadvantages that aren't appreciated in today's market?
Why did Airbus, for example, put 4 engines on their 340 instead of three? Matter of fact, why didn't they build a three engine aircraft and call IT
2 engines = A320; 3 engines = A330; 4 engines = A340. Then, you have a your variants within each family