Must keep in mind one fact: hockey is a business. It's about turning a profit. Playoff games are big moneymakers. Even if you go out in the first round after two or three home games, you've made a tidy sum. Few businesses will turn down the chance to make short term profit rather than forgo that profit for the possibility, and in sports long term success is never, ever assured, of success two, three, or more years in the future.
If we are a bubble team come the trade deadline, we will be buyers not sellers. It's all about the "now." It might drive fans crazy, but we don't pay the freight.
It's not like, say, a drug company with a new drug in the experimental and testing phase. Once it goes to market, profits are assured for many years.
Investing in 18 year old kids or 30 year old UFAs doesn't bring that same guarantee: to many variables, to many things you can't control.
So taking that profit when you have the opportunity becomes a valid business model.
That's just the way it is.