I thought you didn't consider this thread to be worthy of the forum or that's what you and another poster insinuated earlier.
Planning a trip (running an ad, collecting would-be-clients phones and emails, looking for the right ticket and hotel rate) hoping/expecting to make a profit is an entrepreneurial activity to say the least.
Same applies to escorts who pay high rent in Midtown NYC knowing it will pay off because of most clients are around that area.
We must always invest our money to make a profit no matter how that money was earned.