Haha...
My response was in relation to this.
Good that you can distinguish actual content and collection (luxury item).
Right now I classify cash shop items as collection/luxury items.
They are not a necessity.
Those who want to collect. Go ahead.
Those who don't want. Fine.
I am not the one who is to judge on how you spend your money.
You don't need these items to progress in game.
I got my free chocobo as mount. I don't need to pay Sleipnir to go around the area.
When the time comes where you need to buy an item from cash shop for power up to clear something, I will be long gone.
Since you like to refer to business point of view.
As a business, where there is potential demand, businessmen are not foolish enough to ignore this and not maximize profit.
Don't like cash shop. Don't submit and buy. Let the wallet do the talking.