As Adam said, those minimums are there for the astronaut who has low time, but it is in the Space Shuttle, or even just military pilots in general as they do not fly as much as civilians do. For a civilian, most new hires have thousands of hours of flight time, typically with at least 1,000 hours of turbine PIC time. They have even started getting picky as to the type of turbine, they want to see big airplanes like RJs, Q400s, or the larger corporate jets. Time in small turbine airplanes like Caravans, King Airs, the smaller Citations, etc is not very highly regarded when it comes to interviewing.
Something else to consider, the airlines know that a lot of corporate FO jobs involve a lot of radio work and not much flying, especially when the principals are on board. They are also wise to the “Part 91, sole manipulator of the controls” way of logging flight time and a lot of airlines will not consider that as legitimate flight time.
I am not saying that corporate flying is not a way to get into the airlines, it certainly can be. However, the typical path for a civilian is through the regional airlines.