I don't know why you are surprised, it happens in Rugby League all the time. Some say try others say no try - same piece of video.
As for the stewards adversely affecting turnover, it certainly has'nt stopped mine, nor others that I know. Only anecdotal evidence I know.
Xanadu are suggesting the stewards are bent or just incompetent? I believe neither and believe racing here is run as well as anywhere.

Keep smiling, business is booming.