Do we need charge fee when sell BKC? The BKC is just the fee for BTC/LTC/Doge trade any way.
For example, you wanna buy 100$/BKC(1BKC=1$) for trading on BTC/LTC pair at B&C exchange for some time, your today’s BTC/LTC transaction information ocupies 4KB datasize on B&C blockchain, so you pay 0.4BKC for it. That is 0.1BKC per KB.
One year later, the B&C holders vote for 1.1 $ per BKC, and they lower the fee to 0.091 BKC per KB, so the transaction fee is still 1$ just because B&C holders wanna keep 1$ per KB, of course they may change fee rate to any level if they like.
But your BKC value protected by B&C company against inflation. This DAC provide anti-infaltion money: BKC, better than USD and better than bonds/parking NBT because you can use it at an time.
Except bread, there are quite some product/service do not rot during our life span.