Right because Amazon is not a retail outlet. It is THE Online retail outlet.
The tend to sell a largish amount of CDs AND they will help you market it. So it is very easy to get your physical CD on the largest online retailer in the world. If that is what you wish.
See you are very clueless about the music biz especially for Indies. Indies love physical sales because they are direct to the fans no middle men. You can make a very good living being a good live preforming band without the need to market yourself like an iGadget. You don't have to be on the top of the charts or played on Radio constantly to make a respectable living without selling your soul to some large corp for pennies on the dollar.
The friends I have in the indies make a chunk of change on physical sales because they are very good at putting out a quality product whether it be t-shirts posters or CDs etc. They work hard on their craft and they end up being well rewarded for their efforts most don't even mess with digital sales and none mess with streaming because the payouts are so small. Yet they make a good income and have no other job save for making music and playing live.
"Having their music available on a streaming service provides them more exposure in ONE DAY than they can get in a year of "Gigs". . . but you, for some reason, cannot grasp this."
They can get far more exposure using youtube and Facebook and twitter being none charge for their services and you can do all sorts of great linkage and behind the scenes pieces etc.
Streaming doesn't come close to the exposure the big three of social media can provide and none of them require customers to pay a monthly fee.
I think you'd make a good member of the current Supreme Court, with your flexible ideas of how contracts should be read.