>I don’t think that the problem on learning something new, this is something should be always doing. But what about you are a customer service company have a reputations and name on the market with good and large skill business application and you come to your customer tilling them (we are sorry we choice a wrong software language to make your paid application) and you have to paid more money because someone, somewhere decade to drop one of his products.

True, but that can happen with anything. Nothing is guaranteed. We just have to deal with it and move on, even when it makes you want to scream!