Though the premise is essentially correct the pie chart is wrong in at least one or two areas.
The producer does not make 3%(average) of the band's share but 3 (or more) per cent of the dealer price of the unit sold.
Also 13% is an incredibly low royalty. The entry level these days is around 18%.Many new deals are stronger in favour of the artist than that and there are others that are more adventurous that involve profit sharing as well.
Having said this I still would strongly advocate doing things indie if you can afford it and you have the financial backing to make and promote your own product.
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