Things have changed. See FlyVictor who publish a list of over 100 operators with 500 aircraft on their platform with addresses telephone numbers and links. We (declared interest) have been offering a B to C platform for over 2 years and completed nearly 600 flights. At quotation stage the operator, actual aircraft with tail number and actual pictures are shown to the potential flyer. The margin is declared at 5% for online bookings and 10% for a concierge service. A complete transparent online booking service backed by a member services team.