Yes, but with qualifications. When you see brokers or platforms claiming access to 5,000, 10,000 or 20,00 private aircraft, it's more in theory. After you request a flight, brokers have to then source the aircraft options that best fit your mission. Operators are inundated by quote requests, often from online platforms. They prioritize the brokers who are good customers. They also have "Do not quote" lists of brokers they don't want to do business with for a variety of reasons. What it means is some brokers have access to charter aircraft others don't.