Sorry to hear that there have been a number of these experiences obviously.
Still, I would like to point out that we also have a huge number of just newly found airlines that have been doing incredibly well and have managed to grow in a very healthy way (e.g. India, Pakistan, Indonesia, Malaysia markets). Also, we have seen a number of those airlines that have grown very fast during the first game year, leaving us due to bankruptcy as the C-check season came on, and their high growth hence leading to a very bad fleet commonality. Further, the choice of the launch airport is of course crucial, and as has been pointed out very often in the forum, and by many experienced players, it seemed quite odd to think about starting at an airport where it would be abvious that everybody would try to fly there right from the beginning. Also, the huge number of players in this game in itself brings the competition to a new level.
So, to disturb the monotony a little bit: I really love this scenario with this fierce competition, tight a/c markets, and quickly gone slots. I believe it makes strateg and discipline become much more crucial and the new base airports will make this even more challenging. This is what I like about this game, and I must say, I have been missing that in many other scenarios, where I personally found it quite "easy" to build a huge airline and maintain a market leadership position.