Bandwidth and server storage space aren't cheap but 20% is bottom of the barrel. 30% to 40% is more towards the norm and you can get as high as 60% on some download to own sites (not VOD but still a decent split).
Keep looking, otherwise start your own site where you'll find, after expenses, you run about 50% profit on average.
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I'd rather be ignorant than stupid.
Ignorance implies a lack of knowledge which is easily correctable through education.
Stupidity implies an inability to learn.
Therefore; ignorance is temporary, stupidity is forever!