Recently a North American Part 91 Gulfstream 550 operator attempted a takeoff from a Caribbean island airport without the benefit of starting both engines. In such a hurry to please the principals they failed to start the 2nd engine after a short taxi. Both pilots were very experienced and one of them had prior experience as an USAF 89th Gulstream pilot. The 89th is the Presidential Wing. I won't say who the operator of this airplane is but it's more than just a house hold name.
I know airline pilots have done similar things in the 727 so I'm not sure you simply blame the corporate operators but your right when observe the total lack of oversight that exists in most Part 91 flight departments.