I think part of it may be corporate insurance requirements. This limits supply, by reducing the number of qualified pilots. Someone with 250 hours will usually not be able to fly as an copilot in a corporate jet, and a person with 1500 hours will usually not be able to fly as captain, at the corporate level. Also, corporate flight departments put a value on having quality pilots, because there is a more personal connection to an executive's feeling of safety. There is a more personal connection between the passengers and the crew, and there is an understanding that experience equals safety. In the airlines, pilots are viewed as a group; more specifically, a labor group. There is a disconnection between the passengers, and the crew. Passengers have a blind faith that the FO and CA have an adequate amount of experience, to complete their job safely. The passengers don't get to pick their crew, so they allow the FAA and airlines to do that for them. This can create a conflict of interest, in regards to having quality people in airline pilot positions. The FAA sets the minimum entry requirements (250 hours). The problem is, when airlines are stretched on pilot labor, they will lower experience requirements to increase supply, keeping labor cheap. A corporate flight department would probably not decrease experience requirements to increase supply, because they are held back by insurance requirements, the passengers have a personal connection to the pilots, and understand how experience equals safety; in addition, their pilots are a small enough group, that they are usually not viewed as a "labor group". Corporate pilots are able to negotiate, using their experience as a negotiation tool. I don't think experience could be used as a negotiation tool at the level of the airlines, because the cost of labor within the "labor group" is seen as a barrier to increased profits; union or non-union. There are a few airlines, where management truly understands the value of having quality people, and is willing to pay for them. Unfortunately, this is the exception, rather than the rule. Most are willing to take on anyone who meets the minimum FAA requirements for entry, if labor supply dwindles.